help with a simple VB6 Project

ok. this should be simple for someone more advanced than myself. i just started programming at itt tech, 2nd quarter. ive never programmed before, but im trying it anyway. seems fun. anyway, i decided to try to make a calc program. i got a simple thing going, but wanted to add something. i have a buton that stores the number in the answer box. when you double-click a number inside the list, it automatically puts it into the first text box (theres 2 number text boxes). i want to make it so when you double click the number in teh list, another forms pops up and asks what number box you want it in, 1 or 2. was gettin a little help from a good friend, but she had to go to bed. after she went to bed, i tried it and got a compile error. i dont know what part of the code i would need to post, so let me know and ill post it so you can see what i have.