The short anser is that FTM 2012 will read your FTM version 7 file without any retyping
Some things to consider
Back up your FTM 7 file as a .FTW file not the compressed .FBC that FTM 7 backup produces. FTM 2012 will only read the .FTW file not the .FBC.
On your new computer using Windows Explorer create an appropriate folder and copy your FTM 7 .FTW file to it
When you have installed and registered FTM 2012 and installed a couple of patches, go to the Plan View, Click on the new tree tab and select import from an existing file.
I think in fact FTM 2012 will automatically recognise and .FTW file and offer to install it
As you have an existing Ancestry.,com account you can use this subscription from FTM 2012 . Login in from FTM 2012 using your same user name and password. You will I think be amazed at the integration between FTM and Ancestry.
Navigate to where you have your FTM 7 file saved and follow the prompts
FTM 2012 will do the rest
My advice with online trees is that FTM 2012 wil not work with the online tress created by FTM 7 so you will need to create ne online trees called Ancestor member trees (AMT) with FTM 2012. The good news is that you can sync an AMT with your FTM file
There is quite a learning curve for some from FTM up to 2006/16 and the new version started in 2008. There are some very good training tutorials in the help section of FTM 2012. Worth looking at