I have tried just about everything I have read on forums. I bought a Mac AirBook 11" for Christmas that I worked my *** off for. My last Mac notebook died in May. I have a network of 3 PCs through ethernet and on homegroup. All running Windows 7. My last MacBook had no problems seeing the PC's so I could share the music files. Now with this new Mac, my PCs can see the Mac and access it with no problem but for the life of me I can't configure the Mac to see the PCs. I tried wireless and through an ethernet cable. Please someone help me!