How to Change Size and Position?

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Note that:

System::Call "User32::SetWindowPos(i, i, i, i, i, i, i) b ($HWNDPARENT, 0, $0, $1, 0, 0, 0x201)" 

Should be changed so that it is :

System::Call "User32::SetWindowPos(i, i, i, i, i, i, i) b ($HWNDPARENT, 0, $0, $1, WIDTH, HEIGHT, 0x200)" 

(0x201 includes bit '1', which is SWP_NOSIZE, and you DO want it to size)