Canada Experiences

Hey, guys!

I just got a call from a guy, inviting me for an interview for tomorrow (Thu, 4 Aug)! If you can give me any advice, please tell me!
The job would be here:

http://www.cymaxstores.com/

actually i have no idea, what i am going to do there exactly xD I applied for a Customer Service Associate.
Wish me luck for tomorrow!

http://www.ehow.com/list_6133420_customer-service-associate-duties.html

Am I able to do that?!