Dell 1950 III SAS RAID?

If you have the service tag you can get the original configuration from the Dell website.
Under support you will see the "original configuration" link on the left which takes you to a build sheet for the server.

It does not have a PERC, I need to order and install a PERC...

Might be cheaper to buy a new server.  I bought a controller for my HP DL360 and iif it wasn't under warrantee would have been $1200 or more.

Actually they are fairly inexpensive, check this out:
http://accessories.us.dell.com/sna/category.aspx?category_id=2999&c=us&l=en&s=bsd&cs=04&mfgpid=167752&chassisid=8743&p=2

Here is the manual.  You might need a backplane also, not that familiar with Poweredes of that era:
http://support.dell.com/support/edocs/systems/pe1950/en/hom/html/index.htm

I think those are all the wrong cards.

I think the correct part # is:
WY335

No?

http://cgi.ebay.com/Poweredge-2950-2970-1950-G3-PERC6-PERC-6-i-6-WY335-BBU-/170528449096?pt=COMP_EN_Networking_Components&hash=item27b449a248

It is a 1950 III

http://www.dell.com/downloads/global/products/pedge/en/pe_1950_III_spec_sheet.pdf

Unless you have some sort of dell support, you would be better off with the LSI version (Dell just relabels the LSI cards and brands them).  The advantage with the LSI is that you will get much more current firmware & drivers, plus you can get versions that Dell doesn't offer. (Plus things like RAID6 and more battery backup options)

(And you also get support for operating systems that Dell won't support).  http://www.lsi.com  , then select.  If you are going to be keeping this system for a while, then I suggest future-proofing and getting one that supports SAS-2 and certainly get the battery backup if this is a server and you are going to be using RAID5 or 6.