hey chantu --

you have to send her your original form I797C which is a approval notice of your h1b visa. Make sure she gets it back from consular after the interview since you need that for travel. Along with that -- Marriage cert. is must and attach your most recent pay vouchers (for last three months), take some of your wedding cermony pics. That should do it. Its better to add your employment letter also,,,but its not a must.