Huge wrote:

Anyone know if it's possible to put more RAM in a Dell Inspiron 530?

Depends on your O/S (64 or 32 bit).
The 530 motherboard can handle a total of 4 GB in four slots (so 4x1GB)
and as you say you already have 3 GB (probably made up of 1x1GB stick
and one 512MB stick (X2) so remove the two 512 s and insert two 1 GB
sticks) sure Google will help with videos on how to upgrade RAM in a 530.