Need help with my dryer !!!
When you bought the condo did it say it had an electric dryer hook-up?
The best (and likely proper) method would be to replace the wall outlet (possibly requirng running a different line to it). You may however be able to used the instructions at the following link for converting a 3 prong plug and cord into four, but in reverse?
LINK > Can any one tell me how to change my electric dryer from a 3 prong plug to a 4 prong?
The Appliance Information Site