I have acad 2011 and want to install it on windows 7 home premium 64 bit.
From the moment i click install acad 2011 the following error comes: Can't install this product on the current operating system
I think the issue you are having is because your installer is 32 bit. AutoCAD does not allow you to install the 32 bit version on a 64 bit OS, only 64bit on 64bit. I would suggest going back to your reseller and get the 64 bit version of 2011.
Hope this helps,
AutoCAD Test Development
Randall Young Autodesk Lead Engineer Autodesk, Inc.