Can not install any updates on macbook

Question

This is what I have...
Hardware Overview:
Model Name: MacBook
Model Identifier: MacBook3,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.2 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 4 MB
Memory: 2 GB
Bus Speed: 800 MHz
Boot ROM Version: MB31.008E.B02
SMC Version: 1.24f2
Sudden Motion Sensor:
State: Enabled
capacity: 111.47 GB
available: 17.8 GB
Used: 93.67 GB on disk
(100,580,335,616 bytes)
I also have a copy of iLife 09 that has been installed on my iMac. I would like it to go on the MacBook as well so everything is compatible. It says I need to update the software for OS X but I haven't been able to do that for awhile. This is the message it gives me.
+The update "Mac OS X Update Combined: can't be installed.+
+The following install step failed: run preinstall script for MacOSXUpdCombo 10.5.8. Contact the software manufacturer for assistance.+
It gives me a simular message no matter what software I try to update, printer, itunes...
I have tried making sure I have 15% available memory and I tried making a new user account.
Any help would be appreciated!

Answer 1

First, to the following:
Repairing the Hard Drive and Permissions
Boot from your OS X Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Installer menu (Utilities menu for Tiger, Leopard or Snow Leopard.) After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer. Now restart normally.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
If this doesn't help then download the updater at support.apple.com/downloads/ and try again.