How do I enable SQLite & PEAR?

[jake82]

I just migrated to a new server which is now running Plesk 8.2.1 along with PHP 5.1.6 and Fedora 6. I got all my sites moved over, but it seems that php was built using '--without-pear' & '--without-sqlite'. The server came with everything installed, so there is not PHP directory that I can go into and do a 'make clean' and redo the ./configure & what-not. Can this be changed in Plesk? Any help would be great.