two soDIMM modules ?

My laptop currently has 1GB of RAM. It says in the manual for an upgrade to 2 GB I need `two soDIMM modules' does this mean I throw the 1GB away and just replace it with the 2 modules or do i combine them?

You probably only have two slots in your laptop, is the 1GB you have currently a single stick or a pair?

you need 2 1GB soDIMM and like >>2 said, if you have a 1GB stick in it already, all you need to do is add another one, otherwise replace the 2 512MB sticks with 2 1GB sticks.