Can't right-click on Internet Explorer!

I've a question that i couldnt fix in Vista ultimate 32 bit.
I've 64 bit version as well in my computer and when i open ''64'' bit explorer, i cant rightclick on the internet explorer-on any link exactly nothing. When i open 32 bit explorer i could right-click successfully.
But now i installed 32 bit Vista to my friends Pc and it has just 32 bit explorer. But i cant right-click on explorer here too! Couldnt find a solution for this. I'll be glad if someone can shot something.
Thank you.

Just double click using the left click. Mostly if you don't like that way then, click start and click internet. Fairly easy. If you are still stuck, reply me back. I'll see what I can do.....