How to install AJAX Toolkit on framework 3.5

I got this problem when I had installed Visual Studio 2008 on my new computer, and I had no clue on how to solve it. But then my friend came with a suggestion that have helped him with the same problem, and it worked! So I thought, there must be someone else out there that’s having the same problem. This is how I solved it:
The problem seem to be because VS2008 install a compact edition of Framework 3.5, so you need to get the full package of Framework 3.5 which can be found here - you scroll down and click on the: .NET Framework 3.5 full package.
Now you are ready to install AJAX Control Toolkit to your computer and that is available here - And remember to take the AjaxControlToolkit-Framework3.5, either with or without source.

The last think to do is to save the Bin some place on your computer and "Choose items.." is VS2008 Toolbox.
I hope this will help you as much as it helped me :D