Depending on how you came by Acronis you should be able to log on to your Acronis account and download either an ISO (which you can convert to a bootable CD) or if you don't have an Acronis account for some reason, you can download a 30 day free trial version which you could install on another computer (if that is an option) and build the rescue media from there.
http://www.acronis.com/en-us/personal/pc-backup/
I've always found that no matter which backup software you use, the true value comes from having rescue media for that software, exactly for just such purposes as the issue you are experiencing currently.