Stupid question

[Pablo Murillo]

Hello

My name is Pablo, I'm from Argentina, I'm new on FreeBSD, and I have a very 
stupid question about ports
How can I "re-make" a port and change the options selected the first time I 
make the port ?
For example, I make the port for assp (/usr/ports/mail/assp) and I don't 
have MySQL installed, and I hit Enter to quickly (sorry), and now, I can't 
get the "options" screen again.

Thanks in advance
Pablo Murillo

PS: sorry my english, my natural languaje is spanish, and I'm to bad in 
spanish too :)