SLI OR CROSSFIRE: No, unless it is needed to run 3 monitors.
MONITOR RESOLUTION: Not 100%, they are 3 samsung, VGA, non-widescreen monitors.
ADDITIONAL COMMENTS: A lady I work with bought this maching, and she needs to run 2 monitors, but she would like to run 3 monitors. It doesn't need to be able to play and games, its more for the ability to do work on a lot of web based apps, on all 3 monitors.
You'll need to connect two monitors via the DVI (use DVI to VGA adapters if you need to) ports and for the third monitor use the NON passive display port converter. If you use a passive one, it WILL NOT work.
Problem is that this video card won't run on your current power supply. You'll need to upgrade your power supply in every solution, as more modern video cards have a very high power demand. You're looking at spending at least $400-$450 including tax and shipping, for the PSU and GPU. This doesn't include the cost of the converter, which you'll have to have.
Yep! I would recommend a 4550 for the extra memory for the dual monitors, but otherwise they have a VERY low TDP (Less than 20 watts) and require no external power connections. Not to mention most of them are passively cooled and make no noise.
Sabot00 is right, I apologize. I totally didn't think first and do a bit more research.
A quick note though, that 5450 still can't support 3 monitors, at least according to ATI:
Also, at least 3 simultaneous, active display outputs, including one DisplayPort™ connector are required to support ATI Eyefinity technology. Please consult the manufacturer of a particular product to confirm if it supports this feature.
Because that card has 1 dvi, 1 vga, and 1 HDMI, it doesn't qualify to support 3 monitors at once (according to ATI, unless there's something I'm missing)
Follow up edit:
Some people have reported success via flashing the card's BIOS with a 5450 that has an HDMI to Display Port converter.