Do you mean the 8.0.2 patch?
If so you need to download it, you can find it on the homepage or in the download centre, and then you should be prompted to update your game when the download finishes.
After updating, download the FMF V1.0 DB and extract using WinRAR to:
My Docs/Sports Interactive/Footbaall Manager 2008/db
Do not rename the db folder. That should do it, load up FM and see if you can select it when loading a new game! If not come back here and I will attempt to give you further help! | 
