Is it possible to record the skype or yahoo messenger operations?....
I don't think so it is possible in webload. As far as i know, they don't support think client. Also I don't know what protocol they are using. If they are using HTTP, then i guess we can manually set up proxy to record in webload.
Are you trying to test Yahoo IM or Skype?
As for Skype- you can record your convesations (both video and sound) with SkypeCap (www.skypecap.com).
Curiosity killed the cat...