PEAR installation (on shared account)

Hi all, I am thinking about rebuilding my shopping system (currently www.mp3shopper.nl and www.fotoshopper.nl are using it) to use some PEAR modules (DB, DB_DataObject, HTML_Template_Flexy). However, this shopping system will need to be implemented on servers with 'shared' account access, meaning that I won't have root access, or even access to php cli. It is possible to use PEAR just by including some .php files, or does it need to be compiled? This would be a great drawback for devvers to use PEAR, because I think a lot of devvers do not have the possibilty to buy/maintain their own server, in other words, hiring rackspace, instead of hiring HD space on a shared server. Stijn de Reede the Netherlands PS: PEAR has really grown since I last looked into it. Back then it was only a partly functional DB class. Now it's a great repository with a lot of useful code (I especially like the DB_DataObject).