How to tell what motherboard you have?

[Taem]

2.6 Ghz Pentium 4, yes.

Be sure to get a good heatsink and fan.

"Can this motherboard use DDR ram?" Use the specified PC133 ram like;
Kingston ValueRAM 168 Pin 512MB SDRAM PC-133 - OEM

Either card should work in your machine at 4x and be a little slower -- these cards require additional power.  Be sure you have at least a 400W power supply.

Thank you so much for the advice! My only question now is with the video card. So the 8x AGP will still work with my 4x AGP motherboard? But will it be significantly slower? Okay, its this simple really... I should stop pussyfooting around my main question: will it be able to play Doom III, or will the decrease in speed hinder it?

I'm heading down to Fry's Electronics on Tuesday to pick up a 5-ink cartridge printer/scanner/copier combo, and while I'm there I'm going to get some 'upgrades' for my computer. They have some amazing processor/motherboard deals, and I wonder if it would be cheaper for me to get a processor/motherboard combo instead of just the processor. For example, in todays paper they list a P4 3.2 GHz with motherboard combo for only $129.00 <no rebates required>. Just the P4 2.6 GHz processor alone would cost me $129.00. But then I'll need ram that supports the new board. Such choices... so little time.