sorry you are having problems. I'll need to know what error you are getting to help with this issue.
Update your web.config file that is in the root of your website and look for this section
<customErrors defaultRedirect="~/Error.htm" mode="RemoteOnly"> <!-- On Off RemoteOnly-->
<error statusCode="500" redirect="~/Error.htm" />
</customErrors>
Change the mode to "Off" currently its set to "RemoteOnly", Save and try and hit your site again. You should now see a detailed error message. Copy the error message and reply to this post and i'll help you get it working. or send me the url to your site so I can see the error.
change to this:
<customErrors defaultRedirect="~/Error.htm" mode="Off"> <!-- On Off RemoteOnly-->
<error statusCode="500" redirect="~/Error.htm" />
</customErrors>