Hi,
A not very elegant solution would be to insert the following in the form of every page:
while(list($key, $var)=each($HTTP_POST_VARS))
{
echo "<input type='hidden' name='$key' value='$var'>";
}
So your variables will be passed from page to page in hidden input fields (you should probably put the above into a function to make it neater!)
Hope that helps
C