Yes, that's right. Just make sure that DO NOT get rid of hidden objects.
If you want to customize the modify_form template instead of using <%HTML::generate_modify_form%> tag, then you should have a look at the HTML code below:
....
<form name="myform" action="db.cgi" method=post <%if enctype%><%enctype%><%endif%>>
<%if attachedfile%>
<a href="db.cgi?src=db&cn=attachedfile&do=download_file&id=<%primary_key%>&db=<%db%>&fname=<%attachedfile%>">download</a>
<a href="db.cgi?src=db&cn=attachedfile&do=view_file&id=<%primary_key%>&db=<%db%>&fname=<%attachedfile%>">view</a>
<input type=checkbox name="attachedfile_del" value="delete"> Delete<BR>
<%endif%>
<input type=file name="attachedfile">
......
Hope that helps.
TheStone.
B.