Welcome to Just Answer, I will do my best to help you with your problemThe filter 'warning' is just a timed reminder it's not related to how dirty the filters are. If you can give me the model number of your thermostat I can tell you how to reset it.
If you can't give me the model number you could try call Honeywell customer assistance at1-XXX-XXX-XXXX
Or you can post a picture here and I might be able to identify it
Not sure - it is a Honeywell STAR (picture of a star). Numbers on the back of the thermostat read: CT3611R4450W
Ok give me a minute to look it up
Ok here is the manualhttp://www.google.com/url?sa=t& rct=j&q=&esrc=s&source=web&cd=2&ved=0CIgBEBYwAQ&url=http%3A%2F%2Fcustomer.honeywell.com%2Ftechlit%2Fpdf%2FPackedLit%2F69-1583.pdf&ei=jtC_T4unDeKe6QGRpKnNCg&usg=AFQjCNF-cC2etBwPNTgnX-D_1SXJtxVsKg
Is this your thermostat?
here the the general manual page 10 to enter the customization settingsmanual
are you still there?