After SP2

Hello

I Have a P4 2.4 Go with 512 mo, wireless Dlink DWL G520+ last drivers
The problem is that after installing windows xp SP2
the DWL is disable and enable every few seconds, if I go back to SP1
everythink works ok
I have tried uninstal and re-instal twice and not luck
What can I do?

TIA
--