Building AMD System for cousin, need help

Here are the spec's so far I have for this system for my cousin. She doesn't need anything fancy, just a system to do normal day to day applications. Advice would be helpful.

Case - POWMAX Mid Tower ATX Case with 400W Power Supply, Model "9804-4HL-WHITE" -RETAIL (http://www.newegg.com/app/viewProductDesc.asp?descr iption=11-145-039&depa=0&manufactory=BROWSE) $22.00

CD Burner -

SONY Beige 52x32x52 IDE Internal CD-RW Drive, Model CRX230ED, OEM (http://http://www.newegg.com/app/viewProductDesc.asp?descr iption=27-106-822&depa=0&manufactory=BROWSE)
$28.00

Hard Drive -

Western Digital Special Edition 80GB 7200RPM IDE Hard Drive, Model WD800JB, OEM Drive Only (http://http://www.newegg.com/app/viewProductDesc.asp?descr iption=22-144-122&depa=0&manufactory=BROWSE) $61.99

Memory -

Kingston ValueRAM 184 Pin 512MB ECC Registered DDR PC-2100 - Retail (http://www.newegg.com/app/viewProductDesc.asp?descr iption=20-997-001&depa=0&manufactory=BROWSE)

Motherboards -

MSI "KT6V-LSR"(MS-7021) KT600 Chipset Motherboard for AMD Socket A CPU -RETAIL (http://www.newegg.com/app/viewProductDesc.asp?descr iption=13-130-445&depa=0&manufactory=BROWSE)

Processor -

AMD Athlon XP 2500+ "Barton", 333 FSB, 512K Cache Processor - OEM (http://www.newegg.com/app/viewProductDesc.asp?descr iption=19-103-378&depa=0&manufactory=BROWSE)

I am not sure if I need to get registered memory or not. Also, I think I should get a retail proc to get the warranty form AMD? I am not sure, this is my first time building an AMD system. All you gurus of TW with your plentiful knowledge, please help me.

If you get the OEM version has a 1 year warranty and the RETAIL has a 3 year. If you get the OEM be sure you get a seperate heatsink+fan as it wont come with the stock one.

Yeah, I thought about that. Because I put my system together and got my intel processor retail so it came with the heatsink and fan. Does everything else look ok?

I'd suggest the nForce2 chipset over the KT600. Its performance is a little better, it has very good dual channel support, and you have the option of nice onboard sound. You don't really need registered memory, but I'm not much of a fan of Kingston ValueRAM as a couple of my friends have gotten non working sticks before. Also if your cousin ever plans on upgrading in the future, it's really worth it to buy PC3200 or higher.

Ok, I switched the mobo for an Nforce 2 and the memory for Mushkin 512 mb PC 3200 Ram