I was WONDERING if downloading Service Pack 2 is free online? I have been having problems with my Internet Explorer, and I need to upgrade but it says I need to DOWNLOAD that to be able to upgrade. Thanks.Yes its free.  Accually get sp3.  Just google for a dlJust click Start then All Programs and select WINDOWS Update.

That's the best way to get all of the updated service pack files.When I go to download the service pack it says, the expected program was not found on this computer. I'm not sure what this means.Did you go to windows update?

Did it scan your system?Yeah and it said I'm missing files on my system, so I selected to install them and nothing was installed.Post the EXACT message, you're getting.The message from when I try to install the service pack, or when I run the Windows Update?Both, but where did you get SP2 from?I don't have SP 2 on my computer, I had to re-install Windows, and when I try to upgrade, it won't let me...here's the messages

"The expected version of the product was not found on your system"-when I try to upgrade to SP3And when I try to run Windows Update, the message "The files required to run Windows Update are no longer registered or installed on your system".To install SP3, you have to have at least SP1 installed.
You may start with SP2 actually, since it gives you firewall protection.Download Dial-A-Fix (DAF):
http://wiki.lunarsoft.net/wiki/Dial-a-fix#Mirrors.2Fdownload_locations.2C_and_articles

Have XP CD available in case DAF needs a file. Likely not!

Check all boxes on the screen (clear any restrictions if it shows any)
Then click GO!

When the entire PAGE is finished click the HammerHead at bottom to go to the second DAF page.

Here, one at a time, do the below:

Reinstall BITS
Reinstall Windows Firewall
Repair Permissions
Reset networking

Watch for any File not found or other errors and make note as this may lead to the fix!

Restart computer.It makes me terminate the program after this message comes up:

"The instruction at "0x77f53111" referenced memory at "0x0065007c". The memory could not be "written".OK. So we have some more issues here.
Let's go back. What's the computer story? What's wrong with it to start with?