diff --git a/src/ATCDCL/ATCVoice.cxx b/src/ATCDCL/ATCVoice.cxx
index 05f24daac..46ab81df7 100644
--- a/src/ATCDCL/ATCVoice.cxx
+++ b/src/ATCDCL/ATCVoice.cxx
@@ -29,6 +29,9 @@
 #include <ctype.h>
 #include <fstream>
 #include <list>
+#include <vector>
+
+#include <boost/shared_array.hpp>
 
 #include <simgear/misc/sg_path.hxx>
 #include <simgear/debug/logstream.hxx>
@@ -38,6 +41,14 @@
 
 #include <Main/globals.hxx>
 
+#include <stdio.h>
+
+#ifdef _MSC_VER
+#define strtok_r strtok_s
+#endif
+
+using namespace std;
+
 FGATCVoice::FGATCVoice() {
   SoundData = 0;
   rawSoundData = 0;
@@ -135,13 +146,13 @@ string FGATCVoice::WriteMessage(const char* message, bool& dataOK) {
 	// TODO - at the moment we're effectively taking 3 passes through the data.
 	// There is no need for this - 2 should be sufficient - we can probably ditch the tokenList.
 	size_t n1 = 1+strlen(message);
-	char msg[n1];
-	strncpy(msg, message, n1);	// strtok requires a non-const char*
+        boost::shared_array<char> msg(new char[n1]);
+	strncpy(msg.get(), message, n1); // strtok requires a non-const char*
 	char* token;
 	int numWords = 0;
 	const char delimiters[] = " \t.,;:\"\n";
 	char* context;
-	token = strtok_r(msg, delimiters, &context);
+	token = strtok_r(msg.get(), delimiters, &context);
 	while(token != NULL) {
                 for (char *t = token; *t; t++) {
                   *t = tolower(*t);     // canonicalize the case, to
@@ -154,8 +165,8 @@ string FGATCVoice::WriteMessage(const char* message, bool& dataOK) {
 		token = strtok_r(NULL, delimiters, &context);
 	}
 
-	WordData wdptr[numWords];
-	int word = 0;
+	vector<WordData> wdptr;
+        wdptr.reserve(numWords);
 	unsigned int cumLength = 0;
 
 	tokenListItr = tokenList.begin();
@@ -165,21 +176,19 @@ string FGATCVoice::WriteMessage(const char* message, bool& dataOK) {
 	  	  SG_LOG(SG_ATC, SG_ALERT, "voice synth: word '"
                       << *tokenListItr << "' not found");
 		} else {
-			wdptr[word] = wordMap[*tokenListItr];
-			cumLength += wdptr[word].length;
-			//cout << *tokenListItr << " found at offset " << wdptr[word].offset << " with length " << wdptr[word].length << endl;  
-			word++;
+                    wdptr.push_back(wordMap[*tokenListItr]);
+                    cumLength += wdptr.back().length;
 		}
 		++tokenListItr;
 	}
-
+	const size_t word = wdptr.size();
+        
 	// Check for no tokens found else slScheduler can be crashed
 	if(!word) {
 		dataOK = false;
 		return "";
 	}
-
-	char tmpbuf[cumLength]; 	
+        boost::shared_array<char> tmpbuf(new char[cumLength]);
 	unsigned int bufpos = 0;
 	for(int i=0; i<word; ++i) {
 		/*
@@ -196,7 +205,7 @@ string FGATCVoice::WriteMessage(const char* message, bool& dataOK) {
 			dataOK = false;
 			return "";
 		}
-		memcpy(tmpbuf + bufpos, rawSoundData + wdptr[i].offset, wdptr[i].length);
+		memcpy(tmpbuf.get() + bufpos, rawSoundData + wdptr[i].offset, wdptr[i].length);
 		bufpos += wdptr[i].length;
 	}
 	
@@ -204,8 +213,8 @@ string FGATCVoice::WriteMessage(const char* message, bool& dataOK) {
 	unsigned int offsetIn = (int)(cumLength * sg_random());
 	if(offsetIn > cumLength) offsetIn = cumLength;
 
-	string front(tmpbuf, offsetIn);
-	string back(tmpbuf+offsetIn, cumLength - offsetIn);
+	string front(tmpbuf.get(), offsetIn);
+	string back(tmpbuf.get() + offsetIn, cumLength - offsetIn);
 
 	dataOK = true;	
 	return back + front;
diff --git a/src/ATCDCL/atis.cxx b/src/ATCDCL/atis.cxx
index e05556977..82f2a8f97 100644
--- a/src/ATCDCL/atis.cxx
+++ b/src/ATCDCL/atis.cxx
@@ -285,7 +285,7 @@ int FGATIS::GenTransmission(const int regen, const int special) {
       transmission += " light_and_variable";
   } else {
       // FIXME: get gust factor in somehow
-      snprintf(buf, bs, "%03.0f", 5*round(wind_dir/5));
+      snprintf(buf, bs, "%03.0f", 5*SGMiscd::round(wind_dir/5));
       transmission += ConvertNumToSpokenDigits(buf);
 
       snprintf(buf, bs, "%1.0f", wind_speed);
@@ -314,7 +314,7 @@ int FGATIS::GenTransmission(const int regen, const int special) {
     } else {
       transmission += "   ";
     }
-    int cig00  = int(round(ceiling/100));  // hundreds of feet
+    int cig00  = int(SGMiscd::round(ceiling/100));  // hundreds of feet
     if (cig00) {
       int cig000 = cig00/10;
       cig00 -= cig000*10;       // just the hundreds digit
@@ -337,7 +337,7 @@ int FGATIS::GenTransmission(const int regen, const int special) {
 
   transmission += "Temperature: ";
   double Tsl = fgGetDouble("/environment/temperature-sea-level-degc");
-  int temp = int(round(FGAtmo().fake_T_vs_a_us(_geod.getElevationFt(), Tsl)));
+  int temp = int(SGMiscd::round(FGAtmo().fake_T_vs_a_us(_geod.getElevationFt(), Tsl)));
   if(temp < 0) {
       transmission += "minus ";
   }
@@ -345,7 +345,7 @@ int FGATIS::GenTransmission(const int regen, const int special) {
   transmission += ConvertNumToSpokenDigits(buf);
   transmission += " dewpoint ";
   double dpsl = fgGetDouble("/environment/dewpoint-sea-level-degc");
-  temp = int(round(FGAtmo().fake_dp_vs_a_us(dpsl, _geod.getElevationFt())));
+  temp = int(SGMiscd::round(FGAtmo().fake_dp_vs_a_us(dpsl, _geod.getElevationFt())));
   if(temp < 0) {
       transmission += "minus ";
   }