Hello Lee,
It is not very difficult.
In the Videocoder go to New Job, select the first file of the .tga-sequence.
Next select the Alpha Handling and change it to Shaped / Premultiplied (if applicable)
Next in the Output-window select your desired Framerate and Field Mode and in Color depth choose RGB + Alpha.
Select the location where you would like to store your .AVI-file and press the Render All button.
It should start rendering.
A big remark however on the .tga-sequence:
Make sure the first file of the sequence starts with a 0 and that there are at least 3 digits in the filename.
So for example: NameOfTheTgaSequence_0000.tga, NameOfTheTgaSequence_0001.tga, NameOfTheTgaSequence_0002.tga, etc...
In some cases the sequence won't get properly rendered if the first file isn't 0 at the end.
Good luck!
Kenneth
#XPression