I have tried to understand better the error message. Here it is:

Kernel bug at
drivers/net/wireless/prism54/isl_388xx.c:232!
invalid opcode : 0000 [#1]

Modules linked in: "......... a long...

I've tried the easy way (bios) but it seems no have options about wireless.
The other solution sounds terrible for a linux newbie like me, but if I must put my lazy hands under the cap .... I'll...

Dear all, sorry for my bad english.
I have a Fujitsu-Siemens Amilo D1845 laptop with this wireless card: Gemtek WL850FJx (Conexant)
Chipset: Intersil Corporation ISL3886 Prism Javelin/Prism Xbow...