So you made your own indie game and want to manufacture it on pc. How the heck do you go about that folks?
If your serious about marketing to PC I honestly think steams the only game in town I wouldn't have a clue how you go about it though but it seems like the only market you might have a hope of making real money with although I'm sure there must be other ways like self hosting etc. I'd suggest Googling Steam Greenlight as I'm pretty sure that's related to the topic. Edit: Just remembered Microsofts windows Store that might be another way to distribute as I think they would be easier to get things on.
Or you could try with Desura (http://www.desura.com/), sure it's not like being on Steam but it's a lot easier to get into.