if you are using old hardware and old windows software, i would use a Linux os over old windows any day. if you are wondering about compatibility issues, there is almost none.
the wiki has a guide for you.
https://wiki.project1999.com/EverQuest_in_Linux_Guide
the winecfg can set your windows version to XP if you like but not necessary.
ubuntu and debian have recent releases that will support your hardware.
i am also using linux and i am willing to assist you in your adventure.