Please help me with compaq m2105US
 

Ok, I repeat I want gentoo okey but I want to use my broadcom 54G 125 speed wireless adapter. I dont know nor can I find out the other info but before I download gentoo to a disc I need to kno can I enjoy my laptop with wireless?

Does your laptop have an ethernet port? You may have to install the base system first while being wired, then after all the installation, get your wireless working. Thats how I did it with gentoo on my lappy

EDIT: I didn't realize this is very similar to another post where you say you don't have an ethernet port. My apologies.

I know, but some wireless cannot ever be installed :X so I dont want to loose my fresh 2week old windows install to find that gentoo sucks...

Check gentoo wiki. You can get lappy specs from manual,google or other linux or windows install on your machine.