Place in first empty textbox?????????

[flashdazza]

A have a selection userform called "frmGame" so a user can select a game then this is put into a textbox in a userform called "frmMain"

The user can then go back to frmGAme and select a nother game if the textgame is full with the first game tho how can i get the new game selected to go in a second textbox?

e.g. if textbox1 is selected place game in textbox2 or somethin like this.. What would the code be??

Thanks