Yes. You may install and use Sure Cuts A Lot software two computers you own provided you do not use them at the same time. The intent is to provide you with portability. For example, you may want to install SCAL on a desktop and laptop or netbook.
(See Section 2.2 & 2.4 of the license agreement). Once you install it on your 2 computers you will not be able to install it on a 3rd. The program will try to register the code over the internet and will tell you that you hav exceeded your limit.