You can change which database you are currently using with SET DATABASE TO (DATABASENAME)

so if you want to play with tables in DATA1 and DATA1 is currently OPEN'ed then:
SET DATABASE TO DATA1

You can find more stuff in the built-in VFP help files. There's lots of commands and options!

>I have two databases sets each one in a separate directory. DATA1 and DATA2
>How I can change the databases
>
>I have using
>
>Set Default
>Set Path To
>
>They work fine when I open a table with USE, but when I run a form opening tables in the DATA ENVIRONMENT,
>
>It’s always open the original tables
>
>TIA
>
>Carlos