Lightroom is still not working even after spending several hours on the phone w/ adobe. Suggestions?

[pknipp]

At first, the issue was that we had to type the serial number in every time we used Lightroom. Now, we cannot even get Lightroom to turn on even after typing in our serial number. All we want to do is edit our pictures. How do we get Lightroom to work. I've called adobe a few times and literally spent hours on the phone with them trying different things to get it to work. Still no Lightroom. Any suggestions?

[John Waller]

Which version of Lightroom? Which operating system?