Streaming to PS3

We purchased a PS3 more than a year ago.  Still don't know why--I think we thought if we had company over, they could play games on it.  But in 2010, we didn't have time for much "company"  :-|  So to turn a bad purchase into a better one, I lent it to my sister who made use of it.  Recently, got it back and trying to see how to play media saved on desktop computer onto the HDTV which has no network connection:  The key is a PS3 connected to our wireless network and a DLNA compliant Media Server.

At first tried Windows Media Player but problems getting option of "Turn on media streaming ... " on one computer running Windows 7 Ultimate.  Only get "Turn on media streaming with HomeGroup ... ".  This is what I want:

So rather than jumping through WMP hoops, tried using PS3 Media Server.  Very easy to install and set-up, but some gotchas:

• PS3 divides media into Photo, Music, Video, etc. so if you're looking for a video file while you're in the Photo branch, don't expect to find any!
• By default, PS3 Media Server shares all drives.  For security reasons, you probably want to limit this to specific folders
• PS3 seems to have a limit to the depth to which it can browse folders.  So if you have shared a really deep tree on your media server, PS3 may not be able to navigate to the media you want.   

Results of Video content streamed over our wireless network (in each test, same hardware running media server):

Frame width	Frame height	Frame rate (fps)	Data rate/Total bitrate (kbps)	Stuttering?
560	416	25	1444/1828	Yes
608	336	23	1012/1140	No
640	272	23	1188/1380	No
640	352	25	1117/1245	No
640	480	29	896/1024	Rarely
720	416	29	1061/1445	No
1280	528	23	1728/1997	Yes
1280	544	23	2274/2717	Yes

So far, the results seem to indicate that "Data rate/Total bitrate" is a large factor in whether stuttering of the video/audio occurs.

To eliminate stuttering, with a better network connection where no ethernet ports are available, I'm considering powerline networking (this is just one product in this category); not sure whether I'm willing to spring for that yet.