Although I don't store my bike in the "winter" I get to ride it here in Texas, I still uses something like this to go over my bike each spring. I had several lose nuts and bolts, and one missing a nut this spring. But thought this was a good guide if ya have nothing else..
http://www.bikebandit.com/partsband...er-winterstorage/default~WT.mc_id~166311.aspx
http://www.bikebandit.com/partsband...er-winterstorage/default~WT.mc_id~166311.aspx