Addons or add-ins today will likely break old IE versions so go without and run Windows Update until it's done.
As to Chrome and such, you can download it on another computer and carry/email the installer over.
10 year old gateway Computer failed-Used Re-installation disk, Windows Xp Home Ed Sp1, ..........can't get I.E. to load (probably IE -5).
Can't download and install Google Chrome or I.E.
Have email and internet connection but need a browser?