Here is what I recommend (no external too supported yet)
1. Run MP on your second PC and do all the hashing/ data importing from there
2. Copy the database from your 2nd pc to your htpc
3. Open MP on your htpc
4. Run the "Cleanup Database"
5. Do the "Run Import"
This should save you hashing all the files again, and also save on downloading most of the data from AniDB
Ok THANX I will try this, it is only the "AnimeDatabaseV20.db3" file right ?