get pure date and time from a date time value

I have pure date and pure time fields in my SQL Server 2008 database server.

My procedure receives datetime data from the client.

I need to parse the datetime value to date and time to store in my table.

I can use datepart to get yyyy-mm-dd hh:mm:ss and convert to time or date value.

I would like to know are there any function can get pure date and pure time from datetime value from client applications.

Your help and information is great appreciated,

Regards,

Souris,