>There is a database and it is contain a 10000 record. If I put it all to the List Box Object. How can I to speed-up the perforamce?

Oliver, if you use a grid (as Ed suggests) you can easily implement an incremental search by adding a text box. The user types into the text box and the grid updates (via SEEK) to the next matching item. It's easy to set up and VERY fast to use.

HTH