Forgive Me For The Question I'm Just A Rookie...
Repositories are important, because its where form you update the system or install any tool or software.Same as in windows when you do update you connect to the microsoft server and update your system.
Well Do I Need To Update It Before Installing VM-ware tools???
Repositories contain the tools and everything, There are Bleeding edges Repositories to keep all the tools more up-to-date with almost daily updates.
you might need. i would suggest to update it first
Thanks For rplies Frnds...