I own licenses to use both programs mentioned (Ulead was acquired by Corel some time ago, hence the later versions are under Corel).
All trials and updates, though, are available at the Corel site.
The trial, as installed, can be converted into a full version easily...by purchase of a license for that product at the Corel website. If you have a valid full version from Ulead of any version (I believe) from 7 on, you can buy the update version of Corel VS...I have XII (12) but they may be up to XIII by now. I just did a check and they are at X3 (their sloppy way of combining the Roman numeral for 10 and the decimal 3).
Once the purchase is concluded online, they will send you an email with the license registration number. This is then entered when opening the program (and save your email).
Their website explains all this but this is the "quick and dirty" on how it works