There was a thread I saw on dotnet247 that discussed this behavior, but I’m not sure if it’s what you’re looking for since the goal was to insert a NULL value. What do you want to see instead of 1/1/1900 00:00:00.000? You can always talk to your DBA and ask him to create a default on the relevant column so that a different default value is used.

You could use a default of GETDATE() - which could lead to really bizarre behavior if this is a birthdate…
ALTER TABLE [yourtablename]
ADD CONSTRAINT DF_[yourtablename]_[yourcolumnname]
DEFAULT GETDATE() FOR [yourcolumnname]

Or you could use a different date of your choosing
ALTER TABLE [yourtablename]
ADD CONSTRAINT DF_[yourtablename]_[yourcolumnname]
DEFAULT ‘1978-10-20 04:16:00.000′ FOR [yourcolumnname]

When you insert the table default, you’ll have a value other than 1/1/1900 00:00:00.000.