There may be many services that start before wireless. You may disable them
if you don't use them or setup startup manually. If you have Vista, you may
select delayed startup. Or this post may help.
Causes of wireless slow startup
http://www.chicagotech.net/netforums/viewtopic.php?p=6668#6668

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Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on
http://www.HowToNetworking.com
> Hi everyone,
>
[quoted text clipped - 13 lines]
> Thanks in advance
> Rene