Vista - Accessing Vista Home premium files offline

I have 1 desktop running Vista Home Premium and a laptop running Vista
Business. Both are connected to a home network and are accessing the Internet
and seeing each other fine. I have turned file sharing on both computers and
can access the desktop files from my laptop without any problem but cannot
make them available for offline use om my laptop. When I try to establish a
Sync partnership from my laptop I get the message: "There are no sync
partnerships that be set up on this computer". The "Make available offline"
button in file properties is not available. This problem happened only after
I upgraded my desktop from XP Professional to Vista Home Premium. Before the
upgrade I was able to have desktop files available offline. Please help