Susykat, I looked for some shots of the windows in my photos but I suppose I just didn't take any. Which is a telling point - they're not that impressive. There's only one of any significant exposure on both sides, and the trail is pretty wide at that point. High winds and an icy surface? Maybe cause for a few jitters, but otherwise no biggie. I remember thinking, "Really? THIS is what the fuss is all about?!" IMHO, there are other areas with greater exposure along the section between the windows and the summit, but nothing to get worked up about for most folks - and most people do have some degree of acrophobia. Based on where you've hiked already, I'm sure you'll be fine.
Just be sure to incorporate as much uphill hiking as you can in your training, and acclimate properly when you get to the Sierra. You'll have a great time.
