Using Certificates to create a trusted connection

Hello,

I'm new with certificates and IPSec, so I'm quite lost:

I want to implement a IPSec (transport mode) secure connection between
the Central Office and some remote offices to do admin tasks. I've been
able to set it up using 'phrase authentication' (I'm translating it
from spanish so maybe in English the name differs a little), but I
don't know how to create a certificate authentication. I can't use
Kerberos because the remote offices aren't in the domain. I'm using
Windows Server 2003.

I haven't found any guide or how-to that explain the steps to do it and
my knowledge of certificates should be much better... Where can I get
good information about it?

To create the certificate I've used the follow command-line:
C:\>makecert -n "CN=MyCompany" -r -sv MyCompany.pvk MyCompany.cer

But now I'm lost how to add it using MMC -> Certificates... how to set
up the private in one server and the pub in the other? Or do I need 2
certificates to create a connection where each side trust the other?

I would appreciate some help...


Thank you in advance!

Josep