Currently you will receive Zero Security Updates on XP SP2, MS support (KB, security updates) for XP SP2 ended over 18 months ago (I can't recall the exact date).
SP3 full download is in the order of 363MB if I remember rightly, I had to get someone on broadband download that for me (when I was on dial-up). would this be a legit place from which to download Windows XP SP3?
Even after that, the number of KBs would tax anyone on dial-up and manually downloading them (for off-line installation) would not be an easy task. free 18.5.2342/ Firefox ESR, u Block Origin, u Matrix/ Mail Washer Pro7.11.0/ Drop My Rights/ Win Patrol / Drive Image 7.1/ Snag It 10.0/ avast! Oh, my sister and brother-in-law's computer DOES have High Speed Internet. There is a link in there over at the right, which says, "You're welcome.
No matter where you find it, be it through a torrent website or some other software distribution website, any XP download you come across online is likely illegal.
The only guaranteed legal course of action when you need a copy of Windows XP is to actually buy a new copy of Windows XP. An important downside to a free Windows XP download is that it's too easy for it to include malware or other unwanted software bundled in with the operating system.
The Windows XP Home operating system has the ability to connect to the Internet and download updates from the Microsoft servers.