GRANT statement and Windows login

I am trying to grant a Windows login rights to run a Profiler trace.
I'm using the following command:
GRANT ALTER TRACE to 'DOMAIN\User'
but I keep getting the error
Msg 102, Level 15, State 1, Line 1
Incorrect syntax near 'DOMAIN\User'.
I've tried it without the quotes and still get an error.
What am I missing?
ThanksNever mind, I figured it out:
GRANT ALTER TRACE to [DOMAIN\User]sql