i have 2950 and 3550 cisco switch, how can i configure bandwidth?

please help me
i want to configure bandwidth in 2950 and 3550
question 1:
how can i configure bandwidth at a interface for example
i want to set bandwidth 64kbps at fa0/2 and 128kbps at fa0/9
and i have 1mbps connection from my isp
question 2:
can i configure bandwidth at vlans ?
please tell me commands