Hi June.
I did this recently. Warning: the Hazard Perception part of the test is pretty awful. I originally thought I could do it without any help, being an experienced driver, but the "video game" isn't really fair to experienced drivers. I had to do it three times before I passed. After the second time I was totally confused, so I bought some practice CD-ROMs.
What I found out is that I was consistently reacting TOO EARLY! Yes, you can do that! In fact one of the employees at the test centre admitted that it is common for experienced drivers to fail it because it is really designed for kids/beginners, so spend time with some software that teaches you how to pass first. I used these:
They only run under Windows though...I've got a Mac and had to run them using a Windows emulator (SoftWindows), and that worked adequately.
Your best chance is to pass the theory test the first time, since you can expect a delay of at least a few weeks before you can take it again. The delays have probably been the most frustrating thing for me. My time ran out on November 11th. Getting the provisional licence took months, then passing the theory test took ages. I then took a couple lessons, then scheduled a practical test. My first test was cancelled after waiting a long time for it, then there was over a month's wait for another and I didn't pass.