>> Sorry for the question but how to use it?
Start command _VBAIDE (if you need a VBA-Enabler then install it from >>>here<<<), then copy the "VBA part" from the original message into the code-window of VBAIDE. Having done that (and maybe saved the project) you can go back to AutoCAD, then start command _VBARUN and select the item block_scale_uniformly to be executed.
Just to make sure: that's a description how you can use it, I have not tested the code (as e.g. XRefs might be a problem here).
- alfred -