US Airways Dividend Miles (Pre-FlightFund Merger) - $99 comapnion coupon can be used by person other than card holder?

Does the card holder, not anyone else, much buy the regular priced ticket to qulify this coupon?

I don't think you need to be the cardholder, but you need to buy it with the associated BOA CC. I just read my coupon and it says it is good for 2 companions, but in the small print it says one companion only. I wouldn't worry about it - I have used it 3 years in a row without problem. I have even used it and been placed on United metal on a codeshare so it has some value anywhere in the system.

Can you purchase the companion tickets online?

or you must call to get them?