Hypothetical Workstation system

I'm going through Newegg putting together a wish list of what my ultimate workstation computer would be. I use Solidworks 2007 at the moment everyday for my job.

My question is, would a program like that benefit from a dual graphics card motherboard setup. I have the following products picked out for a total cost of $3,288.

As I don't think I could ever convince my boss to spend that much on a MB, CPU, and two video cards alone, without even adding the cost of the rest of the system components, this isn't a question that my life is hanging in the balance on. I'm really just curious. Anyone with workstation experience know the answer to my question?



ASUS CROSSHAIR Socket AM2 NVIDIA nForce 590 SLI MCP ATX AMD Motherboard
http://www.newegg.com/product/product.asp?item=N82E16813131593

ATI 100-505143 FireGL V7350 1GB GDDR3 PCI Express x16 Video Card (2 of these)
http://www.newegg.com/product/product.asp?item=N82E16814195005

AMD Athlon 64 X2 5000+ Windsor 2.6GHz Socket AM2 Processor Model ADA5000CSBOX
http://www.newegg.com/product/product.asp?item=N82E16819103030