Ok think Ive solved this dslstats.cfg now becomes dslstats.ini which is why it didnt come up when I searched.
A new dslstats folder is created in
C:\Users\kitz\AppData\Local\dslstats
This means the dslstats is no longer 'stand alone' and if the user uninstalls the program, they will have to manually delete that folder.
Eric Im not sure if you want to add a note to this effect on your site for windows users, as they may like me have been lookin under app roaming.
The problem is though its likely to be different for XP
Likely c:\documents&settings\username\applicationdata\dslstats. Can an XP user confirm this please.