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If you haven't tried it yet, you can get a complete list of drivers from Epson, but you have to register. The link is below
Signing up should give you access to the drivers you need. The only other thing I can think of is to locate an older driver for XP and then use the Windows 7 compatibility wizard to make it work with Win 7.
I would give this a try (if you haven't already) and see if you can get the driver you need after registering. if you find this helpful, please "accept." If not, please let me know, and I will see what else I can do to help! I look forward to your reply!