the MB BIOS is capable of recognizing the new CPU properly. Even though the CPU fits in the socket doesn't mean its fully compatible with the BIOS. That may be corrected by an updated BIOS assuming one's available.
I'm planning on upgrading my CPU from 750Mhz to 1Ghz, and I was wondering if I have to make a clean install of my Operating System after the CPU is installed or will the BIOS detect it automatically, similar to the RAM upgrade??