From undeclared to architecture

<p>Well, I applied for architecture and I wasn't aware that I had to submit a portfolio to get in. As a result, I was accepted to Temple but I was accepted as an undeclared major. How do I get into the architecture program? Do I have to wait until the school year starts to switch majors? And how would I do that? Is there architecture program hard to get into? Is it even any good?</p>