Basically , they would check if your H1b is genuine and if you are currently on a job . So few things you may want to include would be : 

Not required but you may think of including these: 

That should be all , and before you go to KTM don't forget to write to the consulate and ask if your record has been updated in PIMS. This will help you get your stamping done right away , else they will make you wait for a week or so. I have heard cases where people waited for 3-4 weeks just because their h1b approval was not updated on PIMS.

consulate Email: ConsKtm@state.gov 

Good Luck...

Last edited: 30-Apr-10 03:26 PM