[Excel 2003]

I have a listbox on a userform which displays the computers name :

YOUR-X9X9X9X9

Is there a way to have a command button check this code against a string
within the command button code which will do the following

1) if the code matches, a second userform :Userform2 is shown
2) if the code doesnt match a warning is shown and the command button doesnt
open the second userform

Can anyone help?

Thanks,

Roger