I have winxp pro. I purchased OD($19.99) over a year ago so my subscription must have expired by now. I purchased it again but this time I bought the package for $49.99. How can I make the transition between the two without losing all my present skins?

Indeed, I did purchase windowblinds first for the $20 but I unwittingly did not see the upgrade tab and just ordered the Object Desktop for the $50. Yes, I am quite the newb. So, now that I have OD, how do I go about making the switch because when I log on to the wincustom site, it does not recognize that I have OD...nor do I have I been able to download it. Yes, I realize how retarded I sound.