[SQLObject] DateTimeCol returns ?

[spam p. <spa...@gm...>]

DateTimeCols I use return strings. SQLObject docs (
http://sqlobject.org/SQLObject.html) says:

DateTimeCol:A date and time (usually returned as an datetime or mxDateTime
object).In turbogears docs:
DateTimeCol stores date and time =96 returned as datetime

So what do I need to do to get my DateTimeCols return datetime objects?