My phone had never been rooted before, so I had to complete that first, before installing the GPS fix. I had a MISERABLE time of getting all of the drivers installed on my PC. But once I invented some new words, and finally got all drivers working (the serial driver in download mode was the trickiest of them), I was happy I spent the time to do this fix.
I haven't used the GPS much on my phone, since upgrading to Gingerbread. Most of my usage was from here in the house, just to compare my device's performance, to those reported by other users. I noticed that I could get four satellites at best, from complete stock. Since doing this fix, I can now see 8 or 9 satellites, with a fix from all of them. It's as good as being outside.
Position errors, in my brief testing, are now down to as little as eight feet.
Bottom line--GPS is much better!! Thanks to those of you who took the time to make this fix possible.