a quadro is nvidia's workstation card. a quadro is similar to a geforce and a quadro 2 is similar to a geforce 2. the quadro has much higher performance in non game 3d-apps, but is incredibly expensicve. unless you professionally work with 3d graphics and photoshop and such, it is hard to justify.however, some geforce 2 and even geforce 2 mx boards can be hardware hacked to be detected as quadros. put in a search on geforce 2 to quadro2 hack and you'll be able to find several pages. i have not yet attempted the hack, but i plan to eventually with a g2 mx. $100 card to $1000 card is an acceptable risk to me, but might not be to you.
basically, if your just a gamer or normal user and not a graphics professional, you can't justify the cost of a real quadro.
or maybe i'm just dumb