asterisk users - Aug 2005 - Asterisk as PSTN gateway, voice mail server with SIP

Hello,

I am sure this has been answered so many times as it is one of the most
fundamental features of Asterisk.

Here is my scenario,

I have setup my asterisk server with a TDM400p which have one FXO and FXS
card.
My SIP server is up and its working fine only in SIP network ( I used ser)
For my daily use telephone, I have a VoIP telephone from a major service
provider.

What I want is to hook my telephone line to Asterisk server FXO port.
So Asterisk is going to work as PSTN gateway for my SIP server.

How do I would do these:
1. If I receive a call to my telephone line, I would like to forward it from
my asterisk server to my SIP
phone.
2. Using my SIP phone, I would like to make PSTN call using my asterisk
server. How I know how to pass call to asterisk. But I dont know how to
receive that call from SIP server and initiate call using my  telephone line
on asterisk server.
3. Just in case, I am not able to answer from my sip phone, I would like
forward that call to asterisk so that caller can leave message.
4. I would like to retrive stored message from asterisk server.

Thanks,