This topic has been discussed in great detail on this site. Search and go through the discussions.

Incidentally are you using a simple Capacitor reset or a Reset controller IC ? If you are using the simple Capacitor reset, then your problems are not going to end when using this ISP chip in particular.

Also useful will be the application note AN461 from the Philips website that tells the relationship between the Boot Vector, Status Byte etc in great detail. Get it. Now.

And if still you can't figure out why you are unable to enter RUN mode, please come back with specific queries.

Raghu