Visual Studio .net 2003 and auto code checking

Hi,
I am using visual studio .net 2003 and the auto code checking is causing me a problem, for some reason its underlining in red

<Form>
<Headerstyle>
<AlternatingItemStyle>

etc...


The code works as I want but why the red lines, someone said it may be that my project has been set to expect a lower version of IE so it's warning me of possible problems. Is this correct and is there a way of turning this off if need be.

Thanks for your help

Joolz
VB.net beginner

Try the .net forums, this is more for VB6 and below.