i just installed a new joomla 1.5.20 on a local server (wampserver) on my pc. the page is the most simple
there is - some text and a gallery.
the error message is:

Deprecated: Function ereg_replace() is deprecated in C:\wamp\www\joomla\plugins\content\jwsig.php on line 78

Notice: Undefined index: JPG Support in C:\wamp\www\joomla\plugins\content\jwsig.php on line 80

Notice: Undefined variable: gd_support in C:\wamp\www\joomla\plugins\content\jwsig.php on line 83

what is that and what should i do? please help.

thanks
???