Scale question? How not to scale an entire solid object(s) but just a part of it?

 From:  Glenn Claes (GLENN)
7982.1 
Hi,
I just finished my basic shape of a pillar, added some detail such as holes and pockets...
And now i figure out that a part of it should be larger, and i'm stuck!

It's very easy to scale an entire object, but how can you scale only a part of that object and leave the rest untouched?
I think that what i'm looking for is parametric modeling...
But i think that my example below is something that doesn't necessarily envolves parametric modelling.
I'm designing a sort of pillar, and the bottom needs to be streched a bit.
I guess that i could cut the object in 2 pieces, move them apart, extrude on of the pieces and boolean union them back together.
But i was wondering if there is a tool in Moi, that alows you to strech/scale between 2 points on a selected object???
When i was using sketchup i could do this i a second, but in moi seems a bit more complicated ...

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