Dell Laser Printer problems

[gazfocus]

I'm not sure if this is the correct place to post this so apologies if not, but I have designed a flyer using Photoshop CS3 but when i come to print it on my Dell 3100CN Colour Laser, the colours look all drained and dull (and the red looks more like orange).

Is there anything I can do fix this as I need to get 200 of these flyers printed by tomorrow

Thanks