[Koha] How to reset the database?

Hi, We have just installed Koha on a PC in my school's library. Now we're ready to start using it, but before we start inputting the collection, we need to delete the sample data from the database. I couldn't find anything on the koha site describing how to do this, so I'm asking here. How do we empty the database? -- Jim Thomas Principal Applications Engineer Bittware, Inc jthomas@bittware.com http://www.bittware.com (703) 779-7770 People think it must be fun to be a super genius, but they don't realize how hard it is to put up with all the idiots in the world - Calvin