QUOTE(madmanmike @ Jun 18 2007, 10:55 AM)

Wow, great information everyone, thanks a lot! I guess I am going to LA next month. Ugh. At least it is for a happy reason!
Another, smaller detail. I am hoping I can buy a one way ticket for her? I know when I visited Thailand, I had to have a round trip to show I was planning on leaving, but that is not the case here, as she is staying. So, I can save a few bucks by getting a one way?
Thanks again to everyone, I wish I had found this site LONG ago.
Michael
You can buy whatever ticket is cheapest for her, one way or round trip. Immigration won't care. They know she's coming to stay, so there's no need to show a return ticket.
Note that she'll have to go entirely through the immigration process before you can meet her in LA. So while it may be a nice gesture to fly there, and once you do meet up, you'll be able to help her find her connecting flight, you won't be able to help get through the line and be admitted into the US.
If you want to help her enter the US, then you'd have to fly outside the US (to Thailand, presumably) and then the two of you could enter the US on the same flight.
OTOH, after the whole process involved in getting the visa, the immigration process at the port of entry is normally an anticlimax. She just needs to show her passport/visa and the mysterious brown envelope. They don't normally re-question the validity of the relationship or things like that.