Full blown vertigo was one of my first symptoms as well. After a week and a half and lots of meds (steroids, antibiotics, etc), it tapered off dramatically. After about a month, I started driving again (I practiced short drives near my house early in the morning). This happened last May (wow, almost a year now) and I had my GK last August. By then, I just felt the usual balance issues and that has not changed. In fact I would say I'm sort of at a platue (?). Anyway, I have just learned to walk with my head straight forward, be careful moving from shade to sun, don't walk on the moving sidewalks (nausea!) etc.
However, I had a really weird experience last Sat. I was driving and stopped in the left turn lane (my an is left side) waiting for my turn arrow. I turned my head to the right and was watching a vehicle pulling a trailer with a Seado on it slowly. Suddenly, I felt like the left side of my car was sinking! I immediately thought "2 flat tires"! and then realized it wasn't the car, it was me sinking!! Needless to say I freaked out. But the sensation lasted only a few seconds, but it was so dramatic, it really frightened me. So anyway, the other night I'm driving home from work, and I'm stopped in the left turn lane waiting for my arrow (oh oh where is this story going?) and foolishly, I'm watching the traffic go by in the right lanes, when I suddenly feel kinda dizzy. Well short story long, I've learned another lesson.

Anyway, I feel for you Gayle and I hope the dizziness gets better soon.