make a plan of what you would like and then stick with the plan. Don't be afraid to get some professional help.....

Choose a color scheme that will typically be two colors, but not much more than that. Then choose curtains that match. For example, let's say you are doing yellow and a sage green. have your curtains be sage green with yellow accents. Get a few cans of furniture spray and paint your furniture to match the same color.

http://decormasterchicago.com/
Check this out for some decor ideas

Well stay on the computer and go to this site (FIRST GET YOUR WIFE!!!) :)
http://www.findanyfloor.com/VirtualRoomDesigner.xhtml
That link is a virtual room designer..Pick out your room options (bedroom, living room, dining room, kitchen, etc) then start switching up the paint on the walls the trim, the ceilings, the flooring, everything!!!!!!!!!!!!!!!!!!!!!
Its so much fun to use and when you both sit down behind the computer and start playing around you'll get an opportunity to see what you guys like and don't like... what you want to incorporate and what you don't! have fun!