If you have an air compressor, you can use it to remove the old grips and install new ones. If not you can cut off the old grips with a curved blade knike. Golfsmith sells one so you can get a look at what it looks like. As for the old tape, there is no reason you have to remove it. I've installed lots of grips using the old type and new solvent or using an air compressor to "blow" the new grips on. Either way works fine. While you can remove the old tape and install new, there's really no good reason to do so.