Recover my old Gilfane forum account

[HoldenCaulfield]

I was a member of these forums for many years and am still able to see old posts of mine by searching for my same name and entering a common word - but I see it shows as just a "guest" and not a clickable name. 

Example of an old post of mine:
https://www.gilfane.com/Forums/index.php?topic=3827.msg25760#msg25760

Is a recovery of that account possible?