how do i prevent data table from appearing?

[#1]

is there a script I could use to prevent the data table from showing up?

[#2]

One can specify a data table to be Invisible or Private and with either one it will not be displayed.

Names Default to Here( 1 );
dt = Open("$SAMPLE_DATA/big class.jmp", invisible );

[#3]

And Invisible is a better choice than Private unless you are prepared to keep track of a private table.