I download today the assmbly for DevExpress 8.1.1 and put the files in Microfour folder, but (I have this same problem with 7.3.8) when I drag to C:\Windows\Assembly the files a message shows saying "Access denied" I'm runing Windows Vista

Be sure to also drag the DLL into the GAC (C:\Windows\Assembly).  Once done, go back into Visual Studio and this assembly will then support the 8.1.1 version of DevExpress.

Thanks for your help

Regards

Everything is possible, just keep trying...

You need to be Admin to do that - presuming you are not and/or your account is the new Vista 'Admin, not quite..' type then right click on Explorer and click "Run as Administrator" then do the drag and drop.

Cheers, Peter