to create folder with date and time

[sri]

I want to create a folder along with date and time when i tried it with the macro %DATETIME% i am getting an error

Error creating destination path 'C:\Programs\Executables\Exes_2006-05-03 6:17:36 PM\': The parameter is incorrect.

where Exes_2006-05-03 6:17:36 PM\
is the folder i want to create

how can i solve this problem?