The RTE used in the forum is the same as the standalone Web Wiz RTE.
Due to integration you can not update the RTE in Web Wiz Forums on it's own.
In Web Wiz Forums some of the options of the RTE are disabled that are not used usually use in forums.
You can enable extra features in Web Wiz Forums RTE by editing the file below in notepad;
\RTE_configuration\RTE_setup.asp
To enable the Add Table button you would change the following line to 'true';
Const blnInsertTable = false
The forum does remove allot of formatting, this is for security reasons to prevent your forum being hacked by hackers copy and pasting dangerous code in to forum posts.