You're welcome, and so is Dusty
Have you had a chance to read the "new to the group" sticky thread at the top of the Lantus forum yet? There's a wealth of info in all of the sticky threads there.
Another good one is the one that explains the "depot" concept.
http://www.felinediabetes.com/FDMB/viewtopic.php?f=9&t=150
What you are doing at the start is getting her body used to a certain level of insulin (the "depot"), so you'll want the keep the dose consistent for 3-5 days at least, test before every shot (always), and get spot tests now and then. I saw in your other post that you got a +2 today? That's great, all data is useful. And like I said, a +6 is always a good time. In theory at least, that is when nadir typically happens, and the nadir number is the number that the dose is based upon. It will tell you, over the course of several days, if the dose needs to be adjusted.
At this point, you want to stay at 1u, and not increase for at least 3-5 days. You would however, lower the dose if you see low numbers at any time (like under 50). If you ever test at shot time, and see a number under 200, you want to stall. Don't give insulin, and don't feed. Post either here or on the Lantus Tight Regulation forum and ask for dosing help. New members are encouraged to not shoot under 200, primarily for safety. Once you have more historical data, it wouldn't be a problem to give insulin below that line, and the longer you do this, the more confident you'll feel doing so.
Carl