Pear Installation Problem - Ubuntu

My LAMP is on Ubuntu 7.10 I am trying to use PEAR, for the first time, and get an error about the include file not being found. It is not there. phpinfo() has include_path set to .:/usr/share/php:/usr/share/pear Here is my error: Warning: require_once(HTML/QuickForm.php) [function.require-once]: failed to open stream: No such file or directory in /home/stephen/www/roissy.ca/public_html/quotesForm.php on line 3 Fatal error: require_once() [function.require]: Failed opening required 'HTML/QuickForm.php' (include_path='.:/usr/share/php:/usr/share/pear') in /home/stephen/www/roissy.ca/public_html/quotesForm.php on line 3 Now I have always just used the Synaptic Package Manager, and I just did a reinstall of PEAR. But there is no /usr/share/pear directory. I have a /usr/share/php/PEAR and it has things that look like installation files. I am venturing where I have not before. I have never performed any kind of CLI install. Can anyone help me figure out how to get the installation fixed? Thanks Stephen