Using add-ons?

[dirntknow]

I'm trying to use the stock by attribute add on and failing miserably! I downloaded what I thought was the latest version to find a directory i'm supposed to rename is missing. I've downloaded and unzipped earlier versions of this add on and it is there in earlier copies. Am I supposed to unzip and upload the original add-on then do the same with all the updates or am I way off the mark? Sorry this sounds so noiobish but if anyone who's used the add on could give me a rough idea where i'm going wrong?
Thanks!!

[frank18]

Did you consult the official support thread for this mod?

[dirntknow]

I've gotta admit I didn't consult it directly but may have stumbled across it in my searches! At 90+ pages I can't say I would have read them all but have got a step closer to getting it up and running. I installed zencart thru my service provider and in good practice they automatically rename the admin folder to a random selection of numbers and letters. Trouble is, the add on doesn't mention this and as obvious as it is now, can trip many a noob up in the same situation... :-)