I have an older version of Windows which prevents me from downloading updates of Abode Flash (so I can’t open PDF files), latest versions of browsers (e.g. Firefox), or free anti virus software.
In particular, many sites require a service pack of minimum 4. Can that be downloaded before this version of Windows is no longer supported? Is it safe to to download and install the older versions. And is there software that can convert a wide range of file formats? For example Firefox is refusing to open Firefox documents, which is very strange. That would solve many of my problems.