You can open your database files here.
Sqliteman can handle files created by Sqlite version 3. If you are using 2.x, you should migrate your data. Sqlite developers change physical data format for its files quite often (in the 3.x releases too) so there can be some tweaky issues when you cannot e.g. open a 3.3.13 file with 3.3.8 driver etc. See troubleshooting chapter for more info.