>OK Nadya if you say it's working then I should accept :)
>Cetin

It's working, but syntax is quite complicated. I found few gotchas like DROPING/SETTING Check should be before ALTER COLUMN, etc. This particular piece of code is working, but I can not guarantee, that Robert's code will work 100% :) It took us quite a long time to write this program (several people worked on it :)) and I still make changes sometimes... :)