TDS rate Chart

Hello

If someone please give me the new TDS rate u/s 94c, 94i, 94a, etc............., if it has been changed tell me the notification no. when it has been changed.

As i came to kanow that TDS on advertisement is chaged from 1% to 2% from 1-10-09, but i have no knowledge so deducted @ 1% on all the parties till date, what will be the effect from income tax at the time of assessment for last year upto 31-3-2010.

Thanks

Pooja