There are no Windows 7 ROMs, or at least no legal ones. Microsoft owns Windows and does not release the source code or allow the use of Windows without a valid license. If someone tried to create and release a Windows ROM, I'm guessing they would be quickly sued by Microsoft.

 

Your best bet is to look for win phone-type themes for launchers or cyanogen based roms.

 

I would recommend in the future to ask questions about Roms that you ask them in the All Things Root section for your specific device.

With that said i never ran across any WinMo style roms when i was romming my G Nex and i haven't heard of any lately.

 

Welcome to the forums, Twisted!
I've never tried it myself, but I know a lot of folks like this launcher to mimic the look of WP7:
https://play.google.com/store/apps/details?id=info.tikuwarez.launcher3&hl=en

 

Moved you over to the Sprint section.

 

BTW sourcery is the ROM of choice for most of us on this forum.

 

I've used Launcher 7 on my old Dinc and it's pretty cool. If you want to the W7 phone feel, this is definitely your best bet. Otherwise, there are a few of stable and fast Android 4.2.1 ROMs out there with everything from super customization (Sourcery) to almost completely stock (mmuzzy's stock 4.2.1 build).

 

I like mmuzzy 4.2.1 but I prefer close to stock .