About AuthzSVNAccessFile Account Aliases

Dear All:
I get a problem when I use SVN.
Below is my AuthzSVNAccessFile. I use SSPI Auth.
Can I get the first name from our Domain server?
Or Can I map the ID to first name?

Many thanks for your help!

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[users]

[groups]
# Topping
g_admins = w00403

# Sunky Jeff Lin Maureen Richard
g_voip = w00768, w00554, w00769, w00551, w00765

# Robin Albert Eileen Telen Frank Wesley
g_sw1 = w00337, w00332, w00230, w00772, w00365, w00282

[/]
@g_admins = rw
[/]
@g_voip = rw
[/]
@g_sw1 = rw
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Best RegardsŁĄ
Sunky