Hi, Here I am again looking for technical advice

As XP is discontinued and my PC was about to qualify for its old age pension I bought a new computer which has Windows 8.1 installed and uses Office 2007. The browser is IE 11 (just in case that makes a difference).
My old files were transferred over, but as I haven't looked at Family History much of late its a couple of years since I did a Legacy back up and they are all zip files which no longer seems to be the file format used.....
I also have an Ancestry tree ( but notes etc. are in Legacy)
Firstly, is there a way to transfer the old Legacy data to the new Legacy import and if not how do I go about exporting from Ancestry ?
Thank you in advance for any help