Thanks,
I have few quastions:
1. Is the index problem can cause VFP to go to other line (and to edit/insert/delete) or only to give .f. to the seek?
2. My problems frequentness will grow according my database/files size?
3. What is the maximum lines/size in tables/database?
4. If I will go on SQLserver, I will not get other problems? (Can I go To SQLserver and to be relaxed till the next century with data size and any other thing?)?

Thank's