PM "Find a username" not working

Hi,
When starting a new message in Private Messaging, I click on "Find a username" to select the recipient I want to send the message to, and for some reason its stopped working.
When I click on it the screen goes darker and I can't access the "Find a username" function.
Any idea how to restore it?
Thanks
Anthony

Can you provide a screenshot of your problem?

Heres a screen shot of when I'm going to send a new private message.
When I click on "Find a username" the screen ghosts out gray and won't let me access the username search.
It worked fine before but its just stopped for some reason.
Thanks for your help.

I noticed that error on page sign at the bottom of your computer...

Try using a different computer,and am sure it will work,

Thanks for the help Marc, but I doubt I'll be going out to buy a new computer to help search for usernames!
I realised the problem & its sorted now.
I recently upgraded to Explorer 8. I clicked on "Compatabilty view" which now seems to have done the trick.
One to watch though if you upgrade to IE8.

now is not the time for people to be upgrading to IE8. it's still too new and there are a lot of bugs.I Have had like a month ago for like two weeks.I Finally got sick of all the b/s and went back to 7. I might try it again down the road but not for a wile.I Did like a lot of the new features but there where just to many other small problems that was annoying me.

so anyway
Since the problem appears to be solved i will now marks as solved and lock the thread