Another possibility--last time I bought memory, I priced it on the Web, then went to my local CompUSA (The Dark Side), and asked them to match the price. They did, I put the chip in my PB right there at the counter, it didn't work (surprise, surprise!), they brought out another one, this one worked, and I was on my way. Instant gratification, no hassling with delivery issues, no sending back chips that didn't work, etc. Of course, it would be a little tougher to lug your desktop down there... Brian