Everytime i try to install them i get this error message.
2: file_put_contents() [<a href='function.file-put-contents'>function.file-put-contents</a>]: SAFE MODE Restriction in effect. The script whose uid is 4062 is not allowed to access /usr/local/apache2/misc/19/751/603/450/user/web/forums.silverleafpro.com/Themes/blackday/blackday owned by uid 48
File: /usr/local/apache2/misc/19/751/603/450/user/web/forums.silverleafpro.com/Sources/Subs-Package.php
Line: 455
i am completely new to SMF
This is caused by your server configuration and I think you should chmod your themes directory to 777 so the script ca write in the themes directory or to set safe mode off.