Learner's Suite 2008 Vietnamese-English Can't Install

I downloaded the trial version of this package onto a PC running Vista Home Premium. It will not install. It gives error message of cannot copy license.txt. I am running as administrator.

I downloaded the same package onto another PC running XP and it installs and runs perfectly.

HELP!!

Looks like you don't have the admin rights to install the software.
Please contact Microsoft support team to get an assistance.

Here is an extract of the Vista forum:

>>
No doubt this is one of the most common questions/frustrations about Windows Vista. Even if you log on as an administrator, you dont really have administrative rights, thanks to UAC (User Account Control). UAC runs almost everything using non-administrator rights to help protect you from bad software that would abuse those administrator rights to change your settings or install viruses.

When you run a setup program, UAC should automatically prompt you to run it as an administrator using the UAC prompt (which Microsoft calls the consent prompt). If you dont see this, right-click the program, and then click Run As Administrator. Then, it will really run as an administrator. It should have prompted you, but for some reason, Vista didnt realize it needed Administrator rights. It woudlnt hurt to check the software developers website for a version of the program made for Vista; that would also fix the problem.