First, contact microsoft customer services. Providing you are now the owner of the Certificate of Authentisity, they will tell you how to transfere ownership.
Secondly, backup the data you want to keep (save games, documents, programming files etc) and shove them on a CD/ DVD. Then just install the programs onto your new laptop. You can mirror disks with ceratin program, but in my experiance ghosting one hard drive onto another can cause all sorts of problems. In theory it should work, but in my own experiance just reinstalling everything will lead to a might more stable machine. Remember when you are ghosting from one PC to another, you are ghosting that machines drivers as well which will be totally different, these old files and registry enteries can often interfear with the new drivers you need to install.
Keep it simple, reinstall, don't ghost.
I lay upon my bed one bright clear night, and gazed upon the distant stars far above, then I thought... where the hell is my roof?