This was originally an older post from 2008. There is a newer method for doing this.
If you have added Matrix Items you need to back them up before updating. So obviously this would be done before installing on a new comouter and it means you can still access the previous software.
Gage Tarrant has shared a video showing an alternative way to back up and restore the Added Gage/Nelson Matrix Items on 2010-2011 software https://thequantumalliance.adobeconnect.com/_a952644675/p6smjf7rf4m/?launcher=false&fcsContent=true&pbMode=normal
Follow the instructions are for older software in the PDF file below. These instructions do not apply to 2009 -the latest software updates.
To back up files…http://thequantumalliance.zendesk.com/forums/9339/entries/22409
To restore files…http://thequantumalliance.zendesk.com/forums/9339/entries/22411
Make sure you make a back up of these files before Uninstalling your older version of Clasp 32!