I need Two versions on one computer

I need to file personal taxes plus taxes for an estate. Apparently I need two different versions. I bought Home and Business but it doesn't do estates. I now need TurboTax Business. I have one computer. Last year I had a terrible time doing both and ended up having to uninstall the personal version in order to install TurboTax Business. Please tell me this isn't necessary and how I can have both on the computer together.