I recently got the 6.2 ver. as well and wanted to purchase the "Secret Lake", but only if I could open it in 6.2. I checked the product Wiki http://artzone.daz3d.com/wiki/doku.php/azproduct/7265
and found that most of HowieFarkes's scenes are compatible with ver. 6.2 even though they are advertised as being for ver. 7,  The Secret Lake scene installed with no problems, and renders well. The Japanese Garden set is iffy though. The Wiki for it is incomplete, so I'm not sure it will work with ver. 6.2. You might shoot Howie an IM and ask him.