It seems your budget oriented, and you need rock solid stability in your next decision.
I would recomend P4 1.8Ghz northwood and a Asus P4T-E motherboard. since your not playing games a $150 Geforce3 Ti200 should fit in your budget. 512MB RDR, whatever drives you want to buy, we dont have enough info to base any size on.
Ask your advisor what they think about AMD, most professionals avoid them and will kick your ass if you try to slip them one.
You can pretty much throws those parts in a box and shake it twice and it will fall together, onthe other hand if you buy AMD your gonna be taking a crap shoot on if its gonna work when you put it together. Take a few minutes and read a few pages back on this forum (any catagory as they are all full of AMD problems)and notice that 99% of the problems are AMD related. most them are non booting, crashing, random lockups, random reboots, incompatabilities, overheating and so on. can you afford these problems with your advisors computer? I dont think so.
Avoid AMD If you dont have time to screw with it and fix problems. There is no money to be saved buying AMD. RDR and DDR ram prices are almost the same. you will spend more from AMD approved power supply and possibly heat sink upgrade from crapola stock heat sink.
If your a first time builder, the choice is clear. get the Intel based system. your not playing games like most of the people here who will try to sell you an AMD because they own one too.
When I install a machine, I never want to see it ever again. Our company will never sell AMD due to the above said problems, we do not have the money or recources to support AMD. and many vendors have dropped AMD due to the costs involved with eating bad product and high number support calls.
Time for the AMD lemmings to chime in and insult me, call me a liar, and jump up and down franticly.
I need to find transcripts of the hypertransport consortium brawls over platforms. You think were bad on this forum, they are in each others face. SGI is a member of the hypertansport consortium.