http://dl.dropbox.com/u/62701184/arm-eabi-4.4.3.zip
That link is for the toolchain you need, i've been hosting it on dropbox for a while until I get it over to a more permanent host.
I can walk you through it later if you want.
I have it written up on how to set up your linux environment and make changes, including versioning instructions, just haven't found the time to polish off a part of it and add it to the dev reference yet.
Got a whole space reserved for the how to from start to finish on making kernels for the doubleshot, and i've already walked people through it with no kernel dev experience so if you've done it for another device it'll be a cakewalk.
I'm eating breakfast now and gotta run out to another job, and going straight from there to dodgeball practice, then work again tonight and from there right to the job i'm about to do again tomorrow this time, so tomorrow night i'm doubtless going to sleep - maybe as early as saturday evening I could go through it with you on IRC if you are interested.
Otherwise I hope to have that in the dev ref next week, work permitting.