Hi Daniel,
The support section for Qimage SE says:
"Qimage will physically run on any computer running any 32 bit Windows Operating system including the latest Windows Vista OS"
For Qimage Ultimate it says:
"Qimage Ultimate will run on any Windows based system including 32 and 64 bit versions of XP, Vista, and Windows 7"
So there is some doubt if Q-SE will run properly on W7-64 bit, Mike would answer that - you could e-mail support directly.
However, I would thoroughly recommend you upgrade to Qimage Ultimate and enjoy all the latest improvements.
There is no special procedure but I recommend you save some of the Qimage folders that are easily transferred and contain some of your own additions - such as Cutouts, Filters, Profiles and Signatures. Saved printer setups are more difficult because of possible different file paths but it is still worth keeping a backup of those too.
I assume you are currently running XP on the old machine. With W7 the file structure for saved Qimage data is different so take care in copying across - always keep a copy of the original Qimage installed folders (copy & re-name) until you are sure everything works.
Terry

Thank you Mike.

And big thanks to Terry-M for your very precise answer and your valuable advises.
I'll try to take as much care as possible to my folders and other settings during the migration to W7.
As you guessed I'll coming from XP and I'm a little bit lost with the structure of W7 so far, thus I'll be very carefull.
Thanks for your help.

Best regards