Click here to goto the download section, and download the

"Windows 7 Gif Viewer.exe"

After you install this, right click properties on c:\rundll32.exe then change to Windows Xp

Update 6/1/2010 for 64bit users if you are tired of being asked "allow this program" every time you click a gif.Then go here download rundll32.exe to C:\ Then rigth click and change compatibility to Vista