webmail not working with vista

[Ish]

Hi

When I had XP my outlook webmail (exchange server 2003) worked fine. Now that I use Vista ultimate it doesn't!

I can login and view emails fine but when I click reply I just get a red X in the top left of and can't type anything (pic below)

Any ideas?

 

[Ish]

Thanks. At least it's not my fault!!