please help me.

i recently installed a dual boot os running win95 the dual boot os is winxp. in win95 my modem will work, and i can get online. in winxp. even though i install the modem hsp56mr pctel. it will not function. would like to be able to use it . how do i make it work? and is there something that i should be doing that i am not doing?
can not unistall win 95 must be bootable also. boyfriend uses it for his work. so please can someone help with this problem?
parrotmommy