I was having an issue where I could not store just the time in the
datetime field.... it was always defaulting to 1/1/1900 for the date,
you can however go into the enterprise manager and manualy delete the
date part from the feild data and it look like it will "clear" that
1/1/1900 out, only retaining the time part.
On the back end what's happening is that it's setting the date to
1899-12-30 this may help some people that are struggeling to only use
a datetime field for time only.
I could not find any documentation out there on this.
Hope this help someone.