Calmier, researched IAAnotif.exe and it's part of Intel's Application Accelerator software. It's part of your CPU driver package, which makes it about the utlitmate in critical files. If your chip drivers have some damage, that might explain everything. According to Intel, it's a critical process and could easily cause problems if corrupted.
First, you should still be able to run your repair utilities. If you have your start button still visible, click start, then "run" on the classic menu and type cmd. This should open a DOS black box - a command prompt - that should say C:\Users\(name of your account or "Adminstrator", whatever)>. If you're using the new Windows Menu, just type cmd into where it says start search and hit your enter key. Either way, if it's working right, you'll get the command prompt box. Into this, type chkdsk /r (make sure there's a space before the slash) and Vista will tell you you can't do that, it's locked, do you want to reboot. Reboot and Checkdisk will run before Windos reboots. /r has it check your entire disk, so it will be at least a couple hours. You can also run System File Checker from that command prompt box. Just type sfc/scannow (no spaces). SFC probably won't fix any of the Intel stuff, but might be worth a try if it's a damaged Windows module that's fighting with iaanotif.exe. Which might explain why it's giving you the wrong answer about SP1.
If neither of those will run, you should be able to run at least chkdsk through F8. SFC shouldn't run that way, it needs Windows at least safe booted, but I might be wrong. Definitely try it, I can't remember. To do this, when the F8 boot screen comes up, select "command prompt" or "safe mode with command prompt" to get a command prompt. Your screen will say C:\ or C:\something. Try the sare mode command prompt too, if the first doesn't work. From the c:\ prompt you can type chkdsk /r to run the chkdsk utility, and can try sfc/scannow. I would still run these utilities first before I tried anything else.
Since you can still surf, here's an explanation on iaanotif.exe from a good reference site:
After I ran what repair utilities I could run, I'd reinstall my chip drivers. If you can get to your start menu, you can go Control Panel (switch to Classic View - trust me, it's easier) and open your Device Manager. You may even see warnings under your "controllers" (your chip drivers). In any case, you can click on controllers to open the controllers section up. Then right click on one (if there's two or more) of the ones listed and select "update driver" from the menu and Windows will try and download and update your driver, if needed. If that gives you more problems, you can select "properties" from the right click menu, select the driver tab and hit the button that says "roll back driver" to undo what you did.
It's more reliable to download the drivers from either the laptop manufacturer or Intel, but you may not have that option. With Windows messed up, the downloads may not install, but you can try. Using "update driver" may not work for the same reason. The other problem is, to get the right package, your going to have to be sure you've got the right info. Support on the laptop's site should be able to give you the right driver package from your computers name and, possibly, serial #.
If your drivers really are hosed, and you can't get an update, or - better yet - find those disks, which can also let you run repair utilities, then you're probably hosed, too, so I'd make every effort to run the repair utilities. You might even be able to download a DOS disk repair utility that you can run at boot to fix your disk, but it may have to be one that's just a self contained .exe file that you can download to an easy to find place from your command prompt, like downloading to your C: drive itself, because you may not be able to run ANYTHING that requires an installation now.
I would make EVERY effort to try and run at least chkdsk. That may be your ONLY viable option if you can't find those repair disks! Good luck!