I have gotten several PMs in the last few minutes. I wish I could say without a doubt that Wilma would be a Cat1 at landfall. I can't say that...neither can NHC.

I'm using what I learned from Katrina to react. And that may not apply here. I hope It Doesn't.

The best that I could tell you is. If you live in an area thatis Low and Floods. Go to Higher ground. I have seen predictions of up to 5 inches per hour in some of the HLS and discussions this morning.
http://www.nhc.noaa.gov/text/index_hls4.shtml

If you have large, tall trees around your house, it might be a good idea to secure things that you don't want to get wet. And seek shelter elsewhere. Whether it's a motel, Emergency Shelter or family and friends.
Just take your time and don't get in too much of a hurry.

If you choose to stay at home. Make sure several people know that you are there. They have your cellphone number, and any other information you deem important.

Persons with medical/ medicine needs will need to plan on keeping their medications safe and if perishable-refridgerated.

http://www.cdc.gov has very good links.
http://www.bt.cdc.gov/disasters/hurricanes/index.asp