It's not a rip off. It's business.
You can buy a set of tires for one car and use them on another car, but you can't use them use at the same time. They can only be installed on one car at a time.
The same thing goes for software. You can only load it on one machine at a time.
Of course there is a number of software programs that don't stop you from doing this, but certain ones do. Most games require you to run the game with one of the CDs in the drive, however you can load it on multiple computers. But the kicker is you can't run them on the same network or the internet at the same time or else you will get an error.
I have an MP3/DVD decoder for Windows Media and I have to buy an additional copy for my laptop and my wife's laptop. It just how it works.
If you delete it off your desktop and solely installed it on your laptop, I bet that would work.
Soyo Dragon Ultra Platinum Edition powered by a P4 3.06GHz w/HT @ 533FSB
ATI Radeon X800Pro 256DDR <---Yeah!!! I finally got it!!!
1024MB PC3200, Creative Audigy LS, 2 x 40GB = 80GB RAID 0
Windows XP Pro, DOOM 3, CS, UT2004, BF1942 RtoR, CNC Generals
Finished Half-Life 2!!!!!!!!!!