Ignoring the fact that this is posted to the wrong forum...
As has already been said your DVD player will play it if it is DivX certified. You'll see a DivX Video symbol on the front of it if it is, indeed, certified. Note: DivX files will play perfectly on a DivX certified player however other files with the AVI extension may not (ie Xvid).
Your other option - which has also been stated - is to convert it and burn it to a DVD. VSO ConvertXtoDVD works quite nicely for this.
SCN files can be one of various things since the format is used by numerous programs. Do a Google search for "SCN file".