I have gotten live plants from both mikeswetpets and chambers3530 on aquabid and I was very satisfied. Great stuff from both people.
mike - http://www.aquabid.com/cgi-bin/aucti...r&Mikeswetpets
heather - http://www.aquabid.com/cgi-bin/aucti...r&Chambers3530
Here is a link to Jennifers website, it has some stuff I found helpful on my first thai betta too :)
I also got two of these backgrounds for my tanks (one installed in my 10, 2.5 is on its way) It REALLY looks good once they are in the tank. If you have a non standard size tank, just shoot matt an email and they will cut one to fit. They are super easy to deal with and have very very good prices on their stuff.