leaking between head and vtec solenoid. has anyone done it? pretty simple? should i change engine oil same time?

 

It's pretty easy, you don't have to drain the oil. When I did it, I changed the following things because it was hard to really tell which one or more was leaking:
#12 is the gasket/screen you're talking about. You might need your VIN because they're not all the same.
#14 is the gasket under the VTEC solenoid valve.
#25 is the O-ring for the VTEC oil pressure switch.
#8 is the cam plug. For this you have to take off the last cam cap...

 

to continue with JimBlake's answer, if you change the cam plug be sure to change your spark plug grommets and vavle cover gasket.

and like he said, its an easy job.