I've Done it!!
 

finally i've found iso's and at this very moment I'm downloading the 1st file for crazy taxi. It took a huge two day search to find some games but i've done it now.

(pst.) actually I found them a long time ago. the problem was that the sites were so jam packed the servers were down.

anyway, for the next few weeks I'll be backing up all my well-cherished dc games.
thanks for your help guys.