I have a linksys home router that is hard wired to a Windows XP Pro system and a MAC G5 with OS10. I have turned on Windows file sharing on the MAc and mapped the MAC as a drive on the PC. The PC can see the MAC as a drive letter and I can transfer files to and from the MAC using the PC. The MAC however cannot see the PC. How can I get teh MAC to see the PC withoput having to buy software such as DAVE?