I swear by this stuff, I use it.
http://www.newegg.com/Product/Product.asp?Item=N82E16820144161#DetailSpecsSpecificationsModel
Brand Kingston
Series HyperX
Model KHX3200ULK2/1G
Type 184-Pin DDR SDRAM
Tech Spec
Capacity 1GB (2 x 512MB)
Speed DDR 400 (PC 3200)
Cas Latency 2
Timing 2-2-2-5
Voltage 2.7V
ECC No
Registered/Unbuffered Unbuffered
Warranty
Manufacturer Warranty Lifetime
This is even better, use it too.
http://www.newegg.com/Product/Product.asp?Item=N82E16820146355#DetailSpecsSpecificationsModel
Brand mushkin
Series XP3200 Dual Pack
Model 991357
Type 184-Pin DDR SDRAM
Tech Spec
Capacity 1GB (2 x 512MB)
Speed DDR 400 (PC 3200)
Cas Latency 2
Timing 2-2-2
Voltage 2.5V-2.8V
ECC No
Registered/Unbuffered Unbuffered
Heat Spreader Yes
Warranty
Manufacturer Warranty Lifetime
Note the timing. No lights tho.

2 x 256 sticks of that Kingston wasn't enough memory for me, so I added a 512 stick of the Mushkin.
Just my humble opinion.
PS-seemed like there was a bit of a "break in" period on the Kingston. Maybe I just imagined it though. :smoke: