Install SP1 without internet

The CAB file for SP1 that you found likely just has the various files and registry patches that Windows Update downloads to install SP1.

Assuming that you still have access to an internet connection, there are 2 ways to get a portable version of SP1 to install on computers that do not have an internet connection.

First, use the Windows Update Catalog page:

http://v4.windowsupdate.microsoft.com/catalog/en/

You can manually select and download all current updates for currently supported versions of Windows.

There are several listings for XP. If memory serves me well, the one listed as "XP Gold" gives you the most complete list of updates to download.

Just download the desired updates and burn them to a CD.

Next, you can order the Windows Security Update CD.
This CD was released this spring and includes SP 1 along with other updates and a 1 year license for anti virus software.
I could not find the link in a quick search of Microsoft's web site.

Chas

http://www.microsoft.com/windowsxp/pro/downloads/servicepacks/sp1/default.asp

use this link to download the SP-1 to a disk, or disks if you do not have a CD burner. Then install on the other computer. The other ay is to connect the two computers together using a ethernet cable modem to modem and then download the SP-1 to a temp file that is an enabled shared file start/find computer/ enter other computers IP and it will connect to it transfer the file. To get your other computers IP address go to Start/run/type in"cmd"/ black window will open and where the cursor is flashing, type: ipconfig and it should show you what it is.
If it does not show a number but "0's", then type ipconfig /release then ipconfig /renew. and see if it gives it to you then. Without an internet connection it may or may not unless you create a static IP address. The first method of file transfer would be the easiest.