I have a Dell Inspiron 530 and I want to connect two monitors to it. This is a mini tower, not a slim line case. I only have the OEM 300 watt power supply. Are there any suitable video cards that I can install that will work with my existing 300 watt power supply to run two monitors? This is for web surfing, not gaming. I recently upgraded the RAM on this and I sort of have the "bug" to do other upgrades.