There's a link from the forums and I sent you an email with it...
http://www.iit.edu/~parrlaw/axim.html
Also the site does not cover removal of the LCD ribbon cables as 1 of them (the big flat one, is different than the other 2. If you get to that point and need help, email me again. I would like to see you suceed as I am stuck with 32/32 as well... Even 64/32 would be nice... heck 64/64 would rock... Unless you could somehow do 128/128... The memory chips seem to be standard ram modules...
The axim 300 has 2
Infineon
HYB39L128160AT-8
The axim 400 has 2
INFINEON
HYB39L256160AT-8
here's the spec sheet for the ram...
http://www.infineon.com/cmc_upload/d...B39L256160.pdf
And look here... they make 512Mb chips... you could put 128mb of ram on your axim... (ooooohh.... drool drool... If you get this to work, promise me that you'll mod my axim for me first ^_^ then start a buisness)
http://www.infineon.com/cgi/ecrm.dll....jsp?oid=23931