Too much red. my printer has started to print too much red particularly the skin tones are very

Question

my printer has started to print too much red particularly the skin tones are very pink.I use 3rd party inks which were ok and I've tried different ones since the problem started. The only thing I've changed is my computer which now has vista. There was no updated driver as it was "in the box". Do I need to change any settings or profiles?ThanksZigger