I would use the standard lens if you have the macro facility on the D90 (usually a flower symbol on the dial)

The other lenses to look out for are sigma/tamaron are cheaper than the nikon and give just as good images you will need to go for something like 24mm up to 100mm,, like I say the kit lens i have (d5000) gave good results on the macro setting,, I am guesing your kit lens will give simular results..

As for micro lens until today never knew they exsited 😉