Hi, I asked about the c++ IDE's available a few days ago. Thanks for all the info. I have a problem now. I've written a small c++ program for my class. I can compile it with g++ on both my FC5 system and one of my Redhat systems (7.2). The problem is, although they both generate an a.out file, I can only execute it on the Redhat 7.2 system. On FC5 I get a permission denied message. The file permissions are -rwxr-xr-x on both systems. Any ideas? Thanks Todd