Not sure on the GoDaddy servers, some things to check first:
- PHP Memory Limit. This needs to be above 8Mb hopefully 16Mb
- PHP is running as Apache module, as CGI you will have many problems.
- Safe Mode
You can get those details either with phpinfo or a support call.
If all is well. untar and FTP up. chmod the necessary folders
then try running tiki-install.php and see what happens.
If you need safemode there will be probably only be the bottom section by the ini_sets needed.
You will probably find InstallTiki helpful, possibly TikiFriendlyHosts if Godaddy isnt Tiki friendly