Basic .htaccess errors

I'm trying to redirect www to non-www, and i tried like three version of three 3-line code to do that such as this:

RewriteEngine On
RewriteCond %{HTTP_HOST} ^ (www site)
RewriteRule (.*) http://(site)/$1 [R=301,L]

but no matter what I do it gives me a 404, and puts a /1 after my site like (site)/1

Also, I tried the 301 line:
Redirect 301 /(old) (new)

in my old domain and this did nothing.

Any help? Thx.

Squish