It really depends alot on how your Hardware is setup, and the type of files you want to stream.
-TVersity did OK for me, but I too had a few issues with it on my setup. It wanted to stream to my TV as a PS3, and transcode on the fly, although it wasnt needed.
-You also may have got a copy of Nero Media Home Essentials. If so, it was designed to work with it so it might be a better option.
-Another Option is Windows Media Player itself.
Open Windows Media Player.
Click the Streaming Tab at the top, and Turn Media Streaming On.
This works well for the most part, but I had some issues with this as well on my set up. It can be picky at times.
For example, I get a Invalid File error attempting to stream a MP4 file with H264/AC3 inside (or the file will not even be recognized). Even though the TV itself supports these codecs and more.
Switching to a MKV container may help if you have a similar issue with it.
Oh, and I agree. You really want to avoid a wirless connection for streaming if you can.