So, my girlfriend's XBox RROD'd this morning.

She's in the process of trying to find her receipt to figure out whether or not it's still covered by warranty (it's unlikely). If not, though, we're not paying the ridiculous service repair fees necessary to get it fixed back up... so does anyone have any experience with doing it themselves?
I've found a few guides online, and I know it's possible, but I'm just looking for someone to chime in with first-hand experience on the issue. If so, link me to your methods, or a guide, or whatever you used. I'd greatly appreciate it.
Tbqh, I'd rather just crack the bugger open myself and fix it up then wait the 2 month period (that seems to be what I've heard from just about everyone) to have it repaired and sent back, regardless of warranty. But not my XBox, so not my call.
Anyway, any advice is appreciated. I'm not a newbie when it comes to electronics repairs, I've done work on my Macbook and PCs before, as well as other simple things like peripherals and the like. As long as I don't need a soldering gun (I don't have one), anything is do-able.
Thanks!