1. Open More than one instance
Opening more than one Google talk is useful in many situations, but by default setting google is not letting 2 instances at a time
to enable this supply /nomutex as startup parameter to googletalk.exe
right click on google talk shortcut
Edit target and add /nomutex at the end like this way
“C:\Program Files\Google\Google Talk\googletalk.exe” /nomutex
now you may open as many instance of talk you want
2. Type Bold Letters in gtalk
use * meaage* will convert tour message in bold
same way try -message- will italize messgae