Ok, now this is the code I am using, and this is what I am getting.
I have already set imgPreview and resized it and everything shows up fine.
Then I call this code to create the thumbnial.

Code:
picSave.PaintPicture imgPreview.Picture, 0, 0, imgPreview.Width, imgPreview.Height
SavePicture picSave.Picture, App.Path & "\thumbnail\" & cmbName.Text & "th.bmp"
returns:

Code:
? imgPreview.Picture
 3002 
?picSave.Picture
 0

I have no clue what to do to fix this?