[network bridge] wlan drops as soon as the bridge creates between wlan and lan

[stvpls]

Hi i have an issue, i have a certain machine (its an assembled server with xp) wich i want to use to bridge my wlan connection to a switch (ive done that in the past same network but on a normal pc) bascially i use a wireless usb key and want to bridge it to the lan switch. but i cant seem to be able to bridge it.
also when i try to manually connect to the wlan it keeps saying not connected, as soon as the bridge is removed the wlan connects back up immediately, ive tried ipconfig/all and i get only the bridge but not the wlan adapted

C:\Documents and Settings\Stefano>ipconfig /all

Configurazione IP di Windows

Nome host . . . . . . . . . . . . . . : stefano-compaq
Suffisso DNS primario . . . . . . . :
Tipo nodo . . . . . . . . . : Sconosciuto
Routing IP abilitato. . . . . . . . . : No
Proxy WINS abilitato . . . . . . . . : No

Scheda Ethernet Bridge di rete (Bridge di rete) 4:

Stato supporto . . . . . . . . . . . : Supporto disconnesso
Descrizione . . . . . . . . . . . . . : Miniport del ponte MAC
Indirizzo fisico. . . . . . . . . . . : 02-13-49-8D-D5-59

C:\Documents and Settings\Stefano>
basically the network card disappears and the bridge says just that no ip no nothing
also i have to point out an issue i have with this machine i need to disable the lan card to browse internet for some reason