ActiveSync and Internet Explorer

[gremlin]

I've had a hunt thorugh the forums but can't find an answer on this one...
When I attach my SPV M600 to my PC via a USB cable and ActiveSynv kicks in all looks well - all my synchronisiation works like magic.
Unfortunately I cannot then use internet explorer on my PC - it can't connect to the internet.
I presume my PC thinks it should be using my phone to connect to the internet - is there a setting I've missed to sort this out ?
Thanks for any help you can give me.

[gremlin]

It seems this is something to do with ActiveSync 4.1 using TCP/IP to connect.
My internet explorer seems to be using the new lan connection to attempt to reach the interent.
Anyone any idea how I stop it doing this ???

[gremlin]

Turned out to be my Internet Explorer's connection settings.
I'm set up to use an automatic configuration script (on my PC at work) - if I change this to use a proxy server all works ok...