dell inspiron with vista/printer is slowww!!!

i just bought a new dell inspiron 531s desktop with a dell 946 all in one printer. it takes 5 to 6 minutes b4 the printer starts. it's also very slow printing the page. i installed the xp drivers for this printer on my laptop, works just fine. i have the same security on both computers. i also tried it with all antivirus turned off, no difference. iv'e spent over 10 hrs on the phone with dell, no resolution yet. someone please help me.