Bought new computer and can't get my SBIG8300m STT working

Hi,
I have bought a new computer and am trying to connect my 10 yr old SBIG8300m STT to it but I can't find/remember getting a software disc as I bought it second hand and can't find online software for it. On my old computer I had a program called SBIGDriverChecker64 that I believe downloaded programs to run the camera and filter wheel. I installed it and updated (first photo shows the update). I also found the archive sbig site and downloaded a sbigudrv.dll file that said was for STT models but when I checked the driver checker64 the same program is listed
Basically when I try to connect to the camera using MaximDl v6 I get an error message (second photo) and am lost.
Any help would be greatly appreciated ��
Mark