Downloading a DVD copy of the 1997 Special Edition when you own VHS tapes of the '97 SE is okay. (Well, maybe not okay by Lucasfilm's standards, but it's enough of a gray area that it's okay by this site's standards.)

Posting a link to someone illegally selling a bootleg for profit is absolutely not okay, and will get you banned from this site.

Directly quoted from this website's rules:

Do not post links to websites selling bootlegs/silvers, or eBay auctions for non-official media.

You can find these rules here.