How do you conference call on an 8830? I tried hitting menu and clicking 'conference call' but everytime I click it I get a dial tone and I dial the number and it pauses for about 30 seconds before giving a busy signal. Any ideas? Thanks!

If your software version of the phone is still .66 that is your problem. Update the OS to fix this.

Nope, I updated it to the most recent about 1 week ago...

Is conference calling enabled on your calling plan with Verizon? Must be. Usually it is, but in your case, you should confirm.