SugarCRM module help

I'm new to SugarCRm and I always get the following error message when I try to install modules: Warning: copy(include/images/[login to view URL]) [[login to view URL]]: failed to open stream: Permission denied in /var/www/sugarcrm/ModuleInstall/[login to view URL] on line 900 Failed to copy /var/www/sugarcrm/cache/upload/upgrades/temp/aPSM0y/include/images/[login to view URL] include/images/[login to view URL] Please help me to install my modules. I'm using Sugar CRm 4.5.0h (Build 1239) NOTE: I'm looking for quick & cheap help.