Upgrading to newest version of Professional and Mal's Cart

Hi Sam: I need to upgrade my Professional version of XLECom and Mal's Cart. I just need to know the best way to do this because I have not used the program is a good while due to the fact that I have a new job and it takes most of my time on the computer doing concept drawing for the sign co. I work for.

I hate to take up your time but I know by contacting you that I will get the right info instead of fumbling around on the site.

Thanks,
Larry Pierce