O.K. try it so:
- install Windows Mediaplayer 11, start it
- connect the PC and PS3 via a crossed LAN Cable, make sure that both are in the same IP Circle.
- start PC and PS3, go to XMB an go to Music or Video an search for a Media-Server (PS3 wont find anything)
- got to Mediaplayer 11 (see the pictures below, instead of the 360 there should be an "unkonown Device"), go to "Media-Bibliothek" an the choose "Mediasharing" or anything like this, Enable "share to"

- leave with O.K.
- go to your PS3 and search for a Mediaserver once more, a Mediaplayer-Server shoul be found ! Browse an stream your shared Media-Files, to copy files, browse to them and press triangle.
