You are running on RHAS 3.0 and so you probably have a good enough recent kernel that has LFS (Large File Support). If so, you should have no problems with files over 2GB (as long as you are not using ext2 fs). To check if you do have LFS support:
Code:
getconf FILESIZEBITS /root
If it says 64, then you're good to go.
-twantrd