301 redirects and www

Will domain.com and www.domain.com work with 301

[peterzak]

Currently I'm using IIS reroute so that no matter if a person types in domain.com or www.domain.co.uk they are taken to the www.domain.co.uk (same for sub directories and pages).

Now Im setting up a 301 redirect from a .co.uk domain to a .com. I've also used jdMorgan's:

RewriteEngine On
RewriteRule ^(.*)$ [abc-widgets.com...] [R=301,L]

to direct for all pages in the site. With this set up will the site still function the same regarding the domain.com being taken to the www.domain.com or do I have to add something else?