I presume you are familiar with sql statements, mysql in particular; There is a command LIMIT 0, 10 which is in your code, this reads 10 results out of the table, so what u need to do is instead of placing 0, 10 place $var1, $var2.
Then you make links which pass those variables to the file and change the values, ie moving down and down 10 by 10 🙂
hope thats helped, there is code in the code gallery somewhere on phpbuilder.com 🙂