Craft Edge

I purchased SCAL in 2010 a while ago and used with my cricut then sold the cricut. Can the program be used with any of the cricuts now?

You still have the software? And it was taken off the computer you sold?
You can still use it with the older Cricut, personal, Expression (original one), but none of the newer ones, such as the Expression 2. You can read here which ones are capatible with SCAL2.
The newer version of SCAL (SCAL3) will not work with any of the Cricuts at all.
http://craftedge.com/support/faq/faq_surecutsalot.html#

SCAL2 can be upgraded free to SCAL3 to use with the Silhouette - which is a much better machine.

You will not lose SCAL2 either - you will have access to both programs if you are still using an old Cricut.