I have domain one with over 1000 backlinks and PR 6 I am going to change my domain, but do no want to loose my PR. Is there an option for this?
You will need to do a 301 redirect. There are dozens of posts on these forums that give instructions for exactly what you have asked. The PR isn't going to show until the next update, and of course you are going to need to keep the original domain name for the redirect as 100% of your PR comes from backlinks to your site.
mjewel, I have read many discussion on this and nobody seem to know exactly whether PR do get transferred with 301 redirects. Have you experienced it yourself?