At work we use .eps illustrator files, the idea being that everyone should be able to preview them in windows explorer. I can't, but REALLY could do with being able to!

Any idea why I can't? I don't have adobe illustrator installed.
I do have a program called thumbsplus installed, which will preview them, but it's crap and I should be able to preview them in windows anyway!
Our illustrator saves the files with tiff previews embedded in them.
His system previews them (in windows explorer). He has illustrator versions 10 and CS(11) installed.