My Archos 504 has a resolution of 480x272. When converting movies, I sometimes don't get that choice of resolutions in the drop down list. Instead I get 480x360. Is this due to the difference between a wide screen movie and a normal movie?
How do I find out the fps on the output movies? I have another program called Video Vault that allows some choices on the fps output.

Try using the Archos AV700 option, that has 480x272 resolution, as does the plain DivX option.