Requires IE7 in the bottle first, but you can't install IE7 in a Win7 or later bottle. The workaround is to flip the bottle type momentarily.
Launch Crossover, click the Bottles button in the top-left, select the Heb bottle, and in the bottom-right under Control Panels open Wine Config. Change the Windows version from Windows 7 to Windows XP. Try installing IE7 into the bottle again and it should go through. Then change Wine Config back to Win7.