How can i access my business computer from my home computer without internet connection?

[Gimli Bill]

Beam me up captain Kirk.
Assuming you do have an internet connection between the two the simplest way is

1) Install a free program called VNC
full vnc ( with server ) on computer you want to control
the viewer only on the comptuer that will watch or control the other

free edition is fine

2) You enter the ip of the remote computer in the viewer
that is all
now this is assuming the ip never changes
it will
dsl - every time log on
cable broadband from time to time

use a ip tracking service

http://www.realvnc.com/download.html

you get an account
install the program on the computer to be watched
assign a name to the computer that will be watched

for example yahooanswers.no-ip.info or whatever you sign up

easier to remember and when it changes the ip the name does not change
so you would enter yahooanswers.no-ip. info in the server name in the vnc viewer

Now if you have a router at the end of the compute being watched ./ controlled the router may well block the ports - not letting you in. Ditto with firewalls including windows xp firewall

to open the ports detailed instructions at

http://portforward.com/

Some people use a free service called Hamachi to easily get through the router with minimal set up. You can also share stuff easily between the computers

https://secure.logmein.com/products/hamachi/default.asp

It is actually quite easy. If you add in a router and a changing ip over time it gets a little more complex
You can set it up initially with the ip of the remote computer (
type into google " what is my ip" to get a service to tell you the ip of the computer.
Once you can do it in a simple fashion and see how easy it is you can go from there with your new found skills