I don't use my wireless for syncing the empeg, just for browsing & file transfer to my Ipaq w/2 GB Toshiba HD. I've read about great differences in speed between WiFi vendors equipment. There's a good deal of information at http://www.practicallynetworked.com/reviews/ or http://www.practicallynetworked.com/support/wireless_range_probs.htm . This might be helpful. I also have heard of problems with XP and certain 802.11b devices, although I've nothing concrete to say in that regard.

-Zeke