I'd really appreciate some input on a problem I'm having. I'm new to Linux and I'm using "Beginning Fedora 2" and "Squid: The Definitive Guide" as my reference material. I've installed Fedora R3 and unpacked squid-2.5.STABLE8 and I've read that I need to configure my file descriptors before compiling by editing /usr/include/bits/types.h and changing the value for FD_SETSIZE. The problem is, it's not there. I saw in a forum where it was reference being in /usr/include/sys/types.h - but it's not there either. Any ideas? Thanks. Bryan