I have a domain that needs a forum like this. is UBB a software that i can install for my forum? how can i get this and how much?

I am using phpbb but i dont like it.

Let me know.

You can find all the info you want at the Homepage

ubbthreads is a commercial forum application; it is not free, instead you must obtain a license (through the order page).

After you've purchased a license and downloaded the script you would install it (following the instructions in the documentation).

From there you'd probably end up importing from your phpbb forum to your newly installed ubb.