All you ned is a basic 301 redirect. here is some information.
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INSTRUCTION ON UPLOADING A 301 REDIRECT
First of all, you'll need to download the .htaccess file in the root directory of where all your web pages are stored. If there is no .htaccess file there, you can create one with Notepad or a similar application. Make sure when you name the file that you remember to put the "." at the beginning of the file name. This file has no tail extension.
If there is a .htaccess file already in existence with lines of code present, be very careful not to change any existing line unless you are familiar with the functions of the file.
Scroll down past all the existing code, leave a line space, then copy and paste the line below as is:
redirect 301 /
http://www.yourtargetdomain.com
It's as easy as that. Save the file, upload it back into your web and test it out by typing in the old address to the page you've changed. You should be instantly and seamlessly transported to the new location.
HTH
OWG