My experience-

Keep repeating the reading of Barons GRE for verbal. It is more than enough to get 500+ (I took it in 2005, got very easily 500+ without much effort, I used just Barons GRE Book for the preparation)

I did not score well in GRE writing part though (may be my computer typing skill was not good, may be I made alot of mistake in typing, at that time there was no option for writing on paper). In Toefl I got 5.5 out of 6 in writing part. I wrote the essay with pencil on  paper while taking Toefl.