Using Outlook 2003 to access Exchange 2003 mail both at home and at work.

Ok, I'd like to be able to use my Outlook client on my laptop (that I use at work) at home, to access my work (exchange) email, and my other mail accounts, all together. I don't really like Outlook Web Access as it's slow, and some features like the calendar are awkward to use. Plus the fact that Outlook Web Access doesn't collect mail from any other accounts that you've told proper Outlook about. To clarify, accessing my other pop3 mail is not a problem - don't need help with that! - just the Exchange mail.
I know there are some similar questions to this one, but I'm not that much of an expert - in fact -I'm not an expert!
The OS is Windows Server 2003. We use exchange for internal and internet mail.
Neither pop3 nor smtp services are enabled on the server at present - do they have to be? What do I have to do in Outlook to point it at my work server from home? Do I need to do anything with either the router at work or the router at home? Any pointers here would be greatly appreciated!
Thanks.