I'm kinda against the reflow idea as well being that I've never done it before and I don't trust myself too much.
I have plenty of thermal paste, but I don't have any pads, so I have to find some other method or buy some.
Finally, I have 1GB of known working RAM installed. The PRAM battery still works fine. And the battery is broken. It has something I call 10hr syndrome since both my 15 and 17in machines have this issue. It thinks it's going to take 10hrs to charge, and 10hrs to discharge. The discharge could be 30 minutes at most, but most of the time, the battery slowly drains while it's plugged in 24/7, but because the battery reports back wrong, the computer doesn't charge it back up.
I just don't think that heating up inadequate solder to reflow it for a temporary solution is wise. If people here have other experiences that have a reflow fixing their issue for good, then that would be awesome. I just know from PS3 issues that a reflow is generally the prescribed method to fix issues that results in a temporary solution which then results in higher running temps which then leads to more fan noise, which then leads to an eventual super crash. I however, would just by a 40 or 60GB PS3 and go that route. Well, the PB I have does have 512MB RAM, so you'll at least have another 256 available to you. The battery is dead along with the PRAM battery as well sadly.