Tokens are really easy to use. Just put them in your run script task and when the task is run, the'll automatically be replaced with a value from the database. Here's some of the tokens:
%ID% - Machine ID assigned by DS for this computer
%NAME% - Complete Computer Name
%NICyMACADDR% - Mac Address of NIC (replace y with a number from 1-8)
%SERIALNUM% - Serial number from BIOS
%NODENAME% - First 8 characters of the node name
for example:
@echo off
echo This computer is %NAME% with a serial number of %SERIALNUM%
pause
As for integrating tokens into your scripts, what would you like to do? Installing software doesn't require tokens. By the way there is also something called "custom tokens" that allow you to put SQL statements directly into the token itself, thus being able to pull out pretty much any information you need from the database, here's an example:
%#*"select data from dbo.mytable where id='123'"%
So if your table was set up with the key being the machine ID of the machine, you could do something like this:
%#*"select data from dbo.mytable where id='%ID%'"%
Good luck,