I have had to reload my PC completely.

Now - everytime I try and use my Vis Studia to develop a
VB/ASP.NET web app I get the error saying that my web server
is not running .NET v1.1

(I have .NET 1.1 loaded on my PC).

Do I need to change a setting on my IIS ?
If so - what do I need to do ?

Many thanks

 try this:

1) Open a command window. (Click Start, click Run, type cmd, and then click OK.)
2) Navigate to the directory of the Aspnet_regiis.exe version you want to use. Remember that each version of the .NET Framework comes with its own version.

The file is usually located in the following directory:
for XP c:\windows\Microsoft.NET\Framework\<versionNumber>
for 2000 c:\winnt\microsoft.net\framework\<versionNumber>

Then type aspnet_regiis.exe -i