danfe123,

ma recently euta immigration seminar ma gaaki thiye. a nepali PhD student asked a question about EB2 and he got the reply that unless you have 30 to 40 publications at least, its not an easy task. he got the suggestion that its better to apply for H1B first and then ko for green card. so base on that i think you need to have a fairly good number of publications. hope that helps a little.