diff -rup a/select.h b/select.h
--- a/select.h	2007-04-24 19:13:37.000000000 -0300
+++ b/select.h	2007-04-24 19:13:42.000000000 -0300
@@ -65,6 +65,8 @@ struct Client {
 
 struct httpd;
 
+#define NULL_ITERATOR static_cast<ClientIterator>(0)
+
 class Clients {
 protected:
 	std::list<Client> clientList;
@@ -78,7 +80,7 @@ protected:
 			c++;
 		}
 	
-		return 0;
+		return NULL_ITERATOR;
 	}
 
 
@@ -151,7 +153,7 @@ public:	
 	
 	void erase( const int fDesc ) {
 		ClientIterator c;
-		if ((c = locateFDesc(fDesc)) != 0) {
+		if ((c = locateFDesc(fDesc)) != NULL_ITERATOR) {
 			clientList.erase(c);
 			close(fDesc);
 		}
@@ -159,14 +161,14 @@ public:	
 
 	void finish( const int fDesc ) {
 		ClientIterator c;
-		if ((c = locateFDesc(fDesc)) != 0) {
+		if ((c = locateFDesc(fDesc)) != NULL_ITERATOR) {
 			c->finished = true;
 		}
 	}
 
 	void address( const int fDesc, char address[HTTP_IP_ADDR_LEN] ) {
 		ClientIterator c;
-		if ((c = locateFDesc(fDesc)) != 0) {
+		if ((c = locateFDesc(fDesc)) != NULL_ITERATOR) {
 			strncpy(address, c->address, HTTP_IP_ADDR_LEN);
 		}
 	}
@@ -177,7 +179,7 @@ public:	
 
 	int readBuf(const int fDesc, char *destBuf, const uint len) {
 		ClientIterator c;
-		if ((c = locateFDesc(fDesc)) == 0) {
+		if ((c = locateFDesc(fDesc)) == NULL_ITERATOR) {
 			// printf("unknown client id %d\n", fDesc);
 			return 0;
 		}
@@ -189,7 +191,7 @@ public:	
 		
 	int readLine(const int fDesc, char *destBuf, const uint len) {
 		ClientIterator c;
-		if ((c = locateFDesc(fDesc)) == 0) {
+		if ((c = locateFDesc(fDesc)) == NULL_ITERATOR) {
 			// printf("unknown client id %d\n", fDesc);
 			return 0;
 		}
@@ -214,7 +216,7 @@ public:	
 	int handleWrite(int socket) {
 		int bytesWritten;
 		ClientIterator c;
-		if ((c = locateFDesc(socket)) == 0) {
+		if ((c = locateFDesc(socket)) == NULL_ITERATOR) {
 			// printf("unknown client id %d\n", socket);
 			return 2;
 		}
@@ -257,7 +259,7 @@ public:	
 			return 1;
 		} else {
 			ClientIterator c;
-			if ((c = locateFDesc(fDesc)) == 0) {
+			if ((c = locateFDesc(fDesc)) == NULL_ITERATOR) {
 				// printf("unknown client id %d\n", fDesc);
 				return 2;
 			}
@@ -301,7 +303,7 @@ public:	
 	
 	void doWrite(const int fDesc, const char* string, const uint len) {
 		ClientIterator c;
-		if ((c = locateFDesc(fDesc)) == 0) {
+		if ((c = locateFDesc(fDesc)) == NULL_ITERATOR) {
 			//printf("unknown client id %d\n", fDesc);
 			return;
 		}
@@ -315,7 +317,7 @@ public:	
 
 	void doWrite(const int fDesc, const char* string) {
 		ClientIterator c;
-		if ((c = locateFDesc(fDesc)) == 0) {
+		if ((c = locateFDesc(fDesc)) == NULL_ITERATOR) {
 			//printf("unknown client id %d\n", fDesc);
 			return;
 		}
@@ -348,7 +350,7 @@ public:	
 
 	void queueFile(const int socket, const int pendingFile ) {
 		ClientIterator c;
-		if ((c = locateFDesc(socket)) == 0) {
+		if ((c = locateFDesc(socket)) == NULL_ITERATOR) {
 			// printf("unknown client id %d\n", socket);
 			return;
 		}
@@ -357,7 +359,7 @@ public:	
 
 	void subscribe(const int fDesc) {
 		ClientIterator c;
-		if ((c = locateFDesc(fDesc)) == 0) {
+		if ((c = locateFDesc(fDesc)) == NULL_ITERATOR) {
 			//printf("unknown client id %d\n", fDesc);
 			return;
 		}