SBS 2003 R2 internet issues

[spectra]

Hi

I have this basically up and running with 2 NICs etc, my problem is to do with some websites, basically anything which seems to have some sort of javascript login script fails. I have checked thru all the IE settings and they look ok, it is something SBS 2003 is doing.

Any ideas? or do you need more information?

What does the internet sharing - exchange?

Thanks

Richard