Those temperatures are OK, but they are a little on the high side.
Check the card for dust, the small coolers on graphics cards can easily get clogged up.
Also, you're usually able to control the fan speed, when I was using my standard cooler on my 8800GT I found that 50% fan speed improved the temperatures vastly and wasn't audible over my other fans. Use a program called Rivatuner for this.