VIEW-THEME " can we create own view theme in exixting view for drupal 6.x "

I have a problem in my exixting site ..there are block type view in drupal 6.x..
now i wanna to change the theme of bolck view and add more feilds and "edit title , edit content.
there are no body feild as drupal 5.x.how can we activate the body part for html, php coding...