help on loading licences in Alpha server

How to install the C / C++ Licences in Digial Alpha 2000 server?

When i did try to load its giving a checksum error.....

What OS are you running? I am assuming Tru64. In that case I usually use lmfsetup and just fill in the template which should be the same as the license sheet you got from HP. A bad checksum is usally because something was mistyped, the license has expired, or you are installing it on the wrong system.