[Centos] CentOS 3.4 on Compaq Proliant

I am trying to install CentOS 3.4 on a Compaq Proliant 1600, and it hangs on probing monitor type when anaconda starts.  I have tried running 'linux text' and manually installing drivers from the f2 options screen.  Any ideas? Forgive me if this is an unbearably simple question, but I am new to linux.

Mike