convert avi/xvid for DVD player

[amerex]

i have a few avi and xvid movies that i'd like to convert to be used with a home dvd player. whats the steps doing this?

oh wait, i forgot to mention.. i have this program ( TMPGEnc) . i took alook at it and tried it out. but when i add the video that i want to convert, it tells me this video doesnt exist. something along those lines.
i am not quite sure how to use it..

thanks!

[amerex]

thanks for the enurmous response...