PowerPoint (PPT) is a single instance app but you can fake it out with IE. Single instance meaning you can only open one window of PPT but you can access multiple slides in that window. Unlike Excel or Word you can have many windows opened showing different sheets or docs. Having two instances of PPT running allows you to easily compare to slides side-by-side.
To access multiple instances of PPT follow either step;
- locate your PPT file from Explorer folder
- right click and select "Open With" and select Internet Explorer (IE)
- IE opens with the PPT you selected
- now open the second slide with PPT as you normally would (ie double clicking on the slide)
- now you can view both slides side-by-side
- Option 1 (preferred)
Another option is to create another user on your system and use the runas command.
- runas /user:myaccount "c:\program files\microsoft office\office11\POWERPNT.EXE"
- Option 2