Sorry, I hit "Reply" too soon. Continuing...
You need to look in the bash shell initialization file and correct the command by removing that ´ character from the front of the export command. Suggest using TextWrangler as your editor, as it will not mess with the file in unexpected ways
<http://www.barebones.com/products/textwrangler/>
TextWrangler is free
Bash can use any of the following named files as an initialization file.
.bash_profile
.bash_login
.profile
.bashrc
By default, none of these files exist, so chances are you will only find one of them (guessing it will be .profile, but it could be one of the others)
When using TextWrangler make sure you tell it to

Show hidden items (the above image is from the open dialog box.
If you want any additional help editing the bash initialization file, feel free to post the contents of the file as a reply and let us know how we can help.