1. Copy the entire music folder to the other computer, assuming the other computer has the same folder structure. See http://www.ceder.net/faqdb/viewsingle.php?RecordId=190

   Or...

2. 1. On the source computer, Run CSDS;
   2. Select 'Music | Edit Music Database';
   3. Select 'Tools | Export';
   4. Save the file and copy it to the destination computer;
   5. Copy your music files, cue sheets, and lyrics to the destination computer, preferably in the exact same folder structure.
   6. If you've added new genre flags, you should also copy file c:\sqdata\music\flags.dat to the same location on the destination computer.
   7. On the destination computer, run CSDS;
   8. Select 'Music | Edit Music Database';
   9. Select 'Tools | Import' and enter the file created on the source computer.

In general, if you switch between using CSDS on two different computers, you should designate one computer as the primary computer (perhaps your laptop), and one computer as a secondary computer. Make all your changes on the primary computer, then copy them (as backup) to the other computer.