Easy2Boot allows you to copy ALL and ANY.iso.img.ima.vhd.wim, ima.gz files, all Linux LiveCD ISOs and Windows Install ISOs (XP through to Server 2016) to. Come Ripristinare Windows Installer Xp. Equipment Guide. Currently, the most common RTL- SDR dongle is the R8. T2 which usually sells for under $2.
Windows Update will NOT work for an XP system unless Service Pack 3 is already installed.
Service Pack 3 requires that Service Pack 1 OR Service Pack 2 be installed first
Service Pack 2 does NOT require Service Pack 1 be installed first.


Thus ...

You can download both XP Service Packs from the Microsoft Update Catalog. You will need to use Internet Explorer v. 6 or newer.
Click the 'Add' button for each SP that you want. Click 'View basket.' Click the 'Download' button. In the window that pops up, 'Browse' to a download location, respond to the UAC prompt if necessary (depends on which version of Windows you're using to access the Catalog), and click 'Continue.'
To create a slipstreamed installation CD that includes all the post-SP3 updates (requires that you first create an installation CD that includes SP3, and if necessary SP2), see http://xdot.tk/
Even if you don't create the post-SP3 CD, that site seems to imply that Windows Update may not work -- even after you've installed SP3 -- unless you first manually install the first 3 updates listed. The list also includes the update to get IE 8 if you need that.