selecting control at runtime (VB.NET)

[A M SOMAN]

I want to select a picturebox control at runtime. Like in MS Word, If we insert any image, we can select it and perform operations on it (crop, rotate, resize, etc.). I have created one user control in which I allow user to add imges (Placed in picture box of 100 X 100 size). I could move the control at runtime by capturing Mouse related events. Now I want to resize it say by dragging the small sqares that should appear at its corners. Can I use GDI+ to achieve this? Can anybody suggest me any code or APIs? Thanks in advance... Anil