I too could not see the storage card from WMP, but found this link in another thread, [url=http://support.microsoft.com/kb/931621/en-us]FIX: Only the external storage is available when you synchronize content from Windows Media Player 11 to a Windows Mobile 5-based device with AKU 2.3 or a later AKU[/url], installed Windows6.0-KB931621-x86.msu on the PC, and now it works.

I'm still having problems syncing contacts & calendar, but at least this is progress.