If DBD::ADO was missing it would say:

C:\>perl -MDBD::ADO -e 1
Can't locate DBD/ADO.pm in @INC (@INC contains: C:/Perl/lib C:/Perl/si
+te/lib .).

BEGIN failed--compilation aborted.
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or this using his code

C:\>"C:\Documents and Settings\blm\Desktop\testingdbd.pl"
install_driver(ADO) failed: Can't locate DBD/ADO.pm in @INC (@INC cont
+ains: C:/P
erl/lib C:/Perl/site/lib .) at (eval 1) line 3.
Perhaps the DBD::ADO perl module hasn't been fully installed,
or perhaps the capitalisation of 'ADO' isn't right.
Available drivers: ExampleP, Proxy.

C:\>
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