Please help!!

Half way through formating my Mac Laptop had power cut, now, OS CD is stuck in cd rom and when I switch on the laptop again it just display one line saying to continue.. enter "mac-boot" when I enter and press OK... its not going forward... 1st. To remove cd from dc rom I need to open but after taking out all the screws still can't open... please help me HOW TO OPEN!! Thx.

Depends on which kind of laptop it is.
Apple's website can probably help you.
I was just trying to restart my son's old iBook the other day and found this place somewhat helpful.

Apple - Support - iBook

It's about holding down the right keys while rebooting. It depends on which model you have though.

Or try this:
Apple Portables: Troubleshooting the slot load optical disc drive

Not sure exactly what your problem is.

Don't remove any more screws unless you really know what you are doing. In fact, I think you should put them back...

Actually my mac laptop is getting charged but unable to open

First boot and press te CD eject key press and release press and release. This should eject the Media from the CD/DVD drive. You can also power on holding down the alt key and select the hard drive Icon to boot from the hard drive. A credit card or similar type device can be inserted unser the CD and you should be able to get it to release from the spindle opening the case will only be a help if you are looking to change the drive.