assume that i have this xml stored in a domDocument:
<Persons>
    <Person>
        <FirstName>Craig</FirstName>
        <LastName>Buchanan</LastName>
    </Person>
    <Person>
        <FirstName>Another</FirstName>
        <LastName>Buchanan</LastName>
    </Person>
</Persons>

what is the best mechansim to be able to "query" this document using
selectsinglenode, and always return a <Persons> element and the 0 to many
<Person> elements that match the xpath query?

Case A: if I use "//Persons", i get the xml listed above.

Case B: if i use "//Persons/Person[LastName='Buchanan']", i get:
    <Person>
        <FirstName>Craig</FirstName>
        <LastName>Buchanan</LastName>
    </Person>

it should return the entire xml string listed above.

Case C: if i do "//Persons/Person[FirstName='Craig']", i get:

    <Person>
        <FirstName>Craig</FirstName>
        <LastName>Buchanan</LastName>
    </Person>

i should get
<Persons>
    <Person>
        <FirstName>Craig</FirstName>
        <LastName>Buchanan</LastName>
    </Person>
</Persons>

what am i missing?

thanks,

craig