Bios Mods -The Best BIOS Update and Modification Source

Hi, thx for great service so far.

I have a HP TX1308NR I tried editing myself using different guides, but unable to modify BIOS

The BIOS seems to be Broadcom-only found here ftp://ftp.hp.com/pub/softpaq/sp39001-39500/sp39359.exe

Current card Broadcom 802.11g
PCI\VEN_14E4&DEV_4311&SUBSYS_1374103C@REV_02


I want to put in a Intel 5100agn
PCI\VEN_8086&DEV_4237&SUBSYS_12118086&REV_00

Thx in advance
Eugene