I have a really old tv... is there a way to connect s-cable to the coaxial with a rf modulator?

i have this stero rf modulator... i guess thats what its called. but it came with a easy dvd install kit. link here --> a href="http://www.radioshack.com/product/index.jsp?parentPage=search&summary=summary&cp=2032057&productId=2103097&accessories=accessories&kw=rf+modulator&kwCatId=2032057&techSpecs=techSpecs¤tTab=custRatings&custRatings=custRatings&f=Taxonomy%2FRSK%2F2032057&features=features&categoryId=2032057&support=support&tab=summary" rel="nofollow"http://www.radioshack.com/product/index.…/a . i have not been able to get it to work. was wondering if it is possible or is this modulator just for stereo? plz help. will pick best answer. thnx.