http://support.mozilla.com/en-US/kb/Recovering+important+data+from+an+old+profile

Your old Profile is located here in Vista & Win7:
drive:\Users\Windows login user name\AppData\Roaming\Mozilla\Firefox\Profiles\profile_name

I tried following the above directions, but still no bookmarks. I must be doing something wrong, because I can't find my old profile. I even copied and pasted the individual .sqlite files and still nothing. I did not replace the old files with the new ones, but saved both. Could that be the problem? Thanks

Turns out the files were hidden. Once I "unhid" them, I was able to import the latest bookmarks backup and that solved the problem. Thanks for the help.