If the room is smallish, there's obviously not much in the way of superior separation that you could enjoy between front right/left/center speakers. Ditto for the rears/sub. It's going to vary wildly, and require a lot of patience/experimentation on your part. Set if up, fire up some music/movies and tear it down again multiple times until you like what you hear.
I would start by using the Dolby Labs 5.1 rough guide to optimize room setups for 5.1, and modify for your small space. Since you don't bother mention a lick of hardware info either (nudge, nudge, wink, wink), the realtek HD room correction option is a moot point.
I have a subwoofer (built in amp), center speaker, two rear speakers and, two front speakers. The monitor is about four feet away from me and the farthest I could get the right front speaker was 3.7 ft, left front 4.5 ft, center 3, and both of the rear speakers are at 7.5 ft away that's as good as I could get. How good Is that for a surround sound setup? If they are way closer than they should be I could make major modifications. It's a very cramped room and these speakers are not designed for a computer. I also don't know how to use the Realtek HD 'Room Coorection' option. I would appreciate any help on that matter as well.

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