Use IE on OSX with Wine

First, make sure you have Homebrew and XQuartz. Then:

brew install wine
brew install winetricks
winetricks ie8

This installs ie8. You can then run it with:

wine 'C:\Program Files\Internet Explorer\iexplore'

It's pretty buggy, though... both ie7 and ie6 run better.

Using 2 different versions together

IE doesn't let you install two versions together. To work around this, you'll need to install them into different WINEPREFIXes.

export WINEPREFIX=~/.wine/prefixes/ie8
mkdir -p ~/.wine/prefixes/ie8
winetricks ie8

And run that version with:

export WINEPREFIX=~/.wine/prefixes/ie8
wine 'C:\Program Files\Internet Explorer\iexplore'

...ie6 and ie7 work the same, just change 8 to the version number you want.