Move MDF and LDF Files from C:\ Drive to D:\ and E:\Drive

Hi Team

Right now MDF and LDF Files are in C:\Program Files\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL\DATA

We want to move MDF file in D:\ Drive and   LDF File in E:\

Can you please suggest us asp.. How to move these files.

subu