Alright well I was able to get Yahoo working doing the following.
Install winetricks first and follow the steps in the tips section then come back here.
is a list of dlls you need they all should be in winetricks, whatever
you can't find in winetricks, look in your ies4linux wine system32
Yahoo might complain that riched20 is missing and
not startup, if that is the case, take the riched20 from your wine
directory and put it with yahoo. The audio and video does not work, I
tried webcam and the webcam would turn and back off, it is probably
just not supported with wine yet because I didn't get any errors from
the terminal, Audio would just say the sound card was just in use but
that could be just with different linux distributions.