Go into the system BIOS and see if there is a setting for some thing like Host + PCI or a memory ratio of 1:1 and 4:3 or something liek that. If not you can do two things. In BIOS you can set all the memory timings to max (Cas2, turbo...).
You can up the bus speed. Your system will not do 100Mhz without some MIGHTY cooling. That would overclock your Celeron to 1050Mhz (thet don't do so well past about 850Mhz). Try upping the bus speed 75Mhz for 780Mhz (this will also increase the memory speed to 75Mhz). At the 83Mhz level your hard drive and graphics cards will likely give you trouble.
The COMPUTER is your FRIEND!
Happiness is manditory.
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