I had broadband over power line for a while a couple of years ago (I'm on fiber now), and at my work (a rural Internet provider) we've tested kits from various vendors and I don't seem to recall any of them being Windows only. The only Windows only device I could think of (which may not even exist) would be some kind of USB Ethernet adapter to power-line device (skipping the RJ45 interface). The ones we tested were just "dumb" media converters.
Anyways back to EoPL(?)... Most of them won't work with mid to high end surge suppressors/UPS due to them blocking/reducing the signal (which they see as line noise). They can't be reliably used on circuits shared with noisy appliances (washer, microwave, etc). If you have any of the old knob/tube wiring in the house, even if it's not on the same circuit (but shares a common neutral/ground in the breaker box), don't even bother. Note that I'm not an electrician, these are just our findings with the devices that we tested.
That being said, if you have somewhat newer (and fairly electronically quiet) circuits, and you plug them directly into a wall socket (skip the power strip) they seem to work pretty good as an alternative to cable runs and wireless. Also, don't expect full Ethernet speeds, think along the lines of a good DSL link. The best one of our guys could get at his house (with 13 year old wiring) was around 60 Mbit/s, even though the device claimed 200 Mbit/s.
Personally, I'd pick up a name brand kit and try it out. If it doesn't work, return it and get the cable fish out.