IMH undeducated opinion #1 seems to be a better computer. However, if you are looking to save money and want to go with #2 there are a few things you should know.
1. Are these desktops or laptops?
2.You should try to inquire of the brand name (HP, Dell, Acer, Sony, eMachine, etc..)
3. 2GB RAM should be enough for Windows XP, but if you intend to store lots of music and video on the computer you may want to up the RAM.
4.Not all computers can have the RAM upgraded to whatever you want to, there may be a limit involved.
5. You indicated lots of skype usage; does either have a built in camera?