Dell AIO 946 PROBLEMS....RIGHT AND LEFT CARTRIDGE MISSING?????

I bought an Inspiron 1501 a couple of year ago along with an AIO 946 printer/scanner/copier.   My printer worked great until I was sent an XPS M1530 as a replacement.  After the switch I have had no luck with my comp.  I have spent OVER 4 hours on the phone doing nothing but getting switched around to 13 different people...13 people I say...all of which said they were sending me to someone who could help.  Needless to say NO ONE helped me and I'm stuck with a printer that won't work with what DELL sent me.  My printer has MAYBE printed 100 papers.  Someone said something about having to download different drivers b/c of different operating systems.  Ever since the first time I tried to print with this M1530 my printer mysteriously says right and left print cartridge missing....They ARE installed correctley and the ARE brand new cartridges.  I'm convinced that this M1530 defected my printer b/c it was still in EXCELLENT cond and I hardly used it....ANY HELP OR SUGGESTIONS WOULD BE GREATLY APPRECIATED....I'm so fed up with DELL because I've spent thousands of dollars in the past and they are doing NOTHING to help this customer AT ALL!!!!!