[RESOLVED] .htaccess works in firefox but not in IE >>

We're moving our site from www.oldsite.com to www.newsite.com. I wanted to add an .htaccess file so anybody visiting www.oldsite.com/something gets sent to a custom 404 error page with then redirects them to www.newsite.com

Pretty simple right? This is my .htaccess file:

ErrorDocument 404 /errordocs/notfound.html

And that notfound.html does the redirection to the new site.

My problem is it works fine in Firefox but I cannot get it working in IE, tested it in both ie6 and ie7 and it won't work.

I've looked everywhere including this site but cannot find anything to help me, seems such a basic problem. I've set the .htaccess permission to 644 and placed it in the root folder of the host.

Can anybody help?

Think I've fixed it but do not know if this is bad practice, I've changed the htaccess to this and it seems to work now in both browsers:

ErrorDocument 404 http://www.newsite.com