With all due respect....

If RealPlayer worked on your old PC it should work on your new one.

However, if you are using RealPlayer at work, it is very picky about proper configuration. In particular, if you run RealPlayer and choose View/Preferences you will see several tabs. If the settings under "Transport" and "Proxy" are not correct, RealPlayer will be unable to play the streaming audio you want. Unfortunately, the settings, particularly the proxy settings, are specific to your organization. There are no generic settings, which I could suggest that will work in any situation.

To get the information you need, you should talk to the people who help you when you have problems with your PC. If RealPlayer is a "supported" application in your organization, they should happily give you the info you need. Otherwise, you might have to ask the right person in the right way.