First make sure to check if another CD is already in the drive. If it's refusing to accept a CD, there might be a defect that is in need of repair. Take it into an Apple store for an inspection.
There might be a scratch on the CD-R.
No it doesnt....
Insert the OS install CD or DVD. Restart your Macbook Pro and hold down the C key. The Mac will boot from the CD or DVD. Choose "Erase and Install" if you want a clean install.
No you can not, as CD-ROM games are for a PC or MAC.
Remove the hard drive and a powerful magnet on it. This works but can lead to slightly unpredictable results.
Insert a blank CD and its icon will appear on the desktop. Double click the CD's icon and drag the required files into the CD's window. Rename the CD as required. There is a Burn button in the top right corner of the CD's Window. When you are ready to burn click the Burn button. If you are gathering stuff ready to burn you can select New Burn Folder from the Finder's File menu. You can add items to this folder and click its Burn button when ready.
Download an ISO of the Mac OS CD, and then burn that ISO with Nero to the CD. It will be an exact copy of that disc. If the ISO was copied from a bootable CD then the copy you burn will be bootable.
Hasbro Interactive sells a MAC version of Scrabble on CD.
To boot from a CD or DVD on a Mac hold down the C key while the Mac starts up. IF a suitable operating system is available on the disc the Mac will use that. If there are problems with the Live CD boot try an alternative route such as Virtual Box (See links below) which can boot from the CD's ISO file copied to the Macs hard disc.
put the CD in, wait for it to load up, then if it is an installer, install it, if it is a folder, drag the Sims 2 icon into you applications folder.
throw it in the dumpster
No you can not, as CD-ROM games are for a PC or MAC.
Yes; either directly via the CD/DVD drive or via a Mac compatible portable CD/DVD player.