Until you have 10 posts you have limited access, but you should be able to search. I did find something that may have kept that from showing on your screen, so I would suggest that you log out and then log back in again to see if the search feature has been restored. If not, reply to this post and try one more time. If neither of these work I will have to do some more research, but I'm pretty confident that you will be able to use the search feature now.
Please let me know one way or another.
With your tenth post you will gain PM and e-mail capabilities. In fact you should then have all the features available to full members.
Thank you for your patience.