select records with a column with specific value on specific date sql server 2000

select records with a column with specific value on specific date sql
server 2000

I have the following table:
ColA ColB ColC
1 A 08/22/2013
2 B 08/22/2013
3 A 08/28/2013
4 C 08/28/2013
How to select all records but the ones with ColB='A' with a date older
than today's date 08/28/2013
Result should be like below:
ColA ColB ColC
2 B 08/22/2013
3 A 08/28/2013
4 C 08/28/2013