You can install Lightroom on two machines with one license so, you can install it on the new computer from this link : Install Photoshop Lightroom
Refer this tutorial to transfer the catalog to your new machine : How to Migrate LR to Another Computer | The Complete Picture with Julieanne Kost | Adobe TV
Problem is I can only install Lightroom on 2 computers. I currently have a copy on my desktop computer and my laptop. Once the new computer is built I need too install lightroom on it. Now I have 3 installed copies of lightroom. I no longer need it on this computer. How can I make sure I don't have a license problem once lightroom is install on the new computer. Will uninstalling lightroom on the current computer be enough so I can install it on the new computer without licensing issues?
You can deactivate the license from the machine you do not need it any more by going to help menu in Lightroom and choose Sign out.
Thanks for your help.