does any one have a suggestion on what to you for Invision Power Board Email Options. i cannot get my emails to go through.. or does anyone no a smtp server i can use?

You cannot use the php mail() function, it is disabled for security reasons. Therefore I suggest you use the captcha for user verification and have the accounts automatically get approved.

About the SMTP server, I don't "THINK" it will work because zymic does not allow scripts connect to anything outside of zymic, so connecting to an SMTP server falls in this category. I don't believe anyone has tried it out.
You could try using your ISP's mail server, but I cannot guarantee any results.