Proxy not being used over wireless connection

Hello,

I adminster about 35 pcs on a windows based network. I have one user who is completely wireless. I use a proxy to support Symantec Web Security at the gateway level. Everyone works great except, my one wireless user.

They access the internet successfully, and the Internet Options/Lan Settings/Proxy Server is configured, but it is not kicking in. He is not being redirected to my gateway ip/port, like all the other computers on land lines.

Is there a place to specify proxy settings in XP Pro for wireless connections? Or do port redirects? Any other thoughts?

Thank you,

John