Absolute form size question

HI

I'm really ticked off about this. I'm trying to use the following to save a picture from a child form:

SavePicture ActiveForm.Image, strFileName

All is well and it does what it says but... I have sized the form to a height of 6000 (the height of the MDI form minus my alligned picture box at top. This is right for me because I can see a bit of it's border all around. The code still saves a picture that is the height of the entire screen no matter what though! What can I do???!!! Is there a better Savepicture call that allows me to pass the forms dimentions (or redefine the ones it incorrectly and arragantly thinks are right)?

(Using Win98, VB6, and API)