running xp pro on an celeron processor 384 ram 20 gig hd

making a blank 6 gig partition and want to install redhat

i want xp to be default boot and can i use my belkinn wireless access to connect redhat to internet

i think i make a startup disk to boot into redhat?? but a year or 2 ago it rewrote my mbr and i am clueless as to how to configure that

as long as i can get back into xp i will spend the necessary time figurng out the rest, but its time to move from M$ and i now have the time to do this thanks for any help given and nice to be here, its been awhile!!!!!