Running 2 monitors on 1 card will not hurt the cards performance.
By the way, I have never bought a Palit card, but every other card I have bought came with a least 1, and sometimes 2 VGA adpaters in the box.
Yeah, you should not loose anything performance wise by using both on the 4670.
Worst case, you can quickly disable the second display through the CCC.
Using your LCD with the DVI output should give you an IQ increase also...
Thanks for the help, I've got the adaptor outlw6669 suggested coming soon in the post. Its possible I might have to get an extension to the CRT VGA as well, I'll see how it goes but I think I'll have a dual monitor setup pretty soon.
Originally tried selling the CRT for £20 but nobody wanted it. Its retro!