Surfing ,games like nfs ,gta,pop shud run comfortably..(i dnt play much but still some gaming is needed)
battery backup shud be good.
wifi with good range probably N series,good screen resolution,comfortable keyboard and touch pad(scrollable).
softwares like oracle,autocad....shud run, speakers shud be ok.
It shud last atleast for 2-3 years(minor problems are ok)
screen not more than 14"
budget not more than 35k