Unable to set up Google Apps email

Hi

I am trying to set up my Google Apps email account in Apple Mail. (ML 10.8.5)

It is an exchange account.

When enter account in Apple Mail, it creates the exchange account automatically. However i think the incoming server is incorrect as it is not d/l emails from gmail.

I have seen notes where they say to enable IMAP on the account. But my gmail account is set up as exchange. Will this interfere with my exchange/push fucntionality on my ios device if I enable IMAP?

Do I have to enable IMAP at all?

I am confused.

Thanks and I look forward to your reply.