Ok, thank you!
I navigated to C:\Program Files\CodeBlocks\MinGW\bin and typed g++ -v.
After a few lines I see:
"gcc version 3.4.5 (mingw-vista special)"
So am I already using a Vista-compatible version? I thought that I had installed the one included with CodeBlocks.
Can someone help me with my second question too?
However you got that version of MinGW, it would appear that it is Vista-compatible. This would appear to be validated by your earlier statement
I can't confirm this for I never had problems with Vista and this MinGW version.
If it ain't broke, don't fix it