Just get the 2 x 1GB sticks, for a total of 2GB. If the sticks are from the same brand/batch, they should work in dual-channel mode as well -- giving a tiny boost in overall performance if the motherboard/BIOS support such.

Crucial is expensive, but worth it for "out of town" buyers because it will just plain work. For people in the USA, there are many cheaper options available.

I bought 2GB off eBay for one of the Dell notebooks we have here. Works great, half the cost of Crucial's product.

For desktop systems, I get noname Samsung/Hynex stuff from a local distributor. Never an issue with any of it all.

Cheers