Windows 7 pro asking for Admin rights for every little thing...

At my job we just went from a windows xp machine to a windows 7 professional. when Some one with out admin rights does anything it asks for someone with admin rights to type in their info (their username and password). For instance, I had one user trying to download an email attachment and it asked for admin permissions. We have other windows 7 pcs in the building and they don't do this. The xp machine before we installed the windows 7 pc didn't do it either. So anyone know how to make it not ask for admin right when doing tasks that shouldn't need admin rights? Yes we are on a network, but their group policy allows them to at least download an attachment or even change their wallpaper. Any help is greatly appreciated.

Thanks,

Jacob G