Please help me recap for starting out...

[Yoma44]

I've read the FAQ and stickies. I'm just trying to see if I understand this because it seems a little complex. Forgive me if it's somewhat redundant.

Here's what I have:
Windows XP
MSI CD-RW MS-8348
Nero Burning Rom 5.5.9.13

Some Games I own that I want to backup:
No One Lives Forever 2
Mafia
Battlefield 1942
Medal of Honor: Allied Assault
Half-Life

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Is there any of them I can backup already?

Which can I NOT backup?

I'm thinking of looking into Alcohol 120%, would that solve my problems or is buying new hardware necessary?