Invite a friend over and cook your wife AND your friend dinner.. you arne't pressuring her, you are cooking dinner for a frend RIGHT?
Buy the household flowers. Don't even show them to her, bring them home, set them up somewhere nice on your desk and watch the show.
Start doing things she wants to see more from you. You need to be creative here but you CAN do that.
Physical affection she wants more of? I already said, get her a spa treatment - from a WOMAN - NO MEN
SHe wants lovign words of affection? Call a relative who is having some problems at home or whatever and talk them through it while she's in earshot... show her you can comfort her with your words... again, you dont have to pressure her at all... its all subtle
Get creative, it isnt' that hard once you start moving.
Do you have any bad habits? Video games? Smoking? Offensive music?
Get RID of that crap. There's bound to be something.