Another angle: Maybe "i s a" are initials for an author. Let me check if there's an academic named ISA who published a paper or tool called CalcGen in 2009. If so, maybe the user should look into academic databases like Google Scholar, IEEE Xplore, etc.
Next, the user who posted this might be looking for a specific tool named CalcGen created by someone with initials ISA in 2009, version 17 perhaps? The term "exclusive" might indicate that the download is for a select group or available only from certain sources. Since the user can't share the direct link, I need to think of alternative ways to help. download calcgen by i s a 2009 17 exclusive
Also, legal considerations: Downloading software from sources that don't provide authorization could be an issue. If the user is asking for pirated software, I should advise against that. But if it's open-source or freely available, then it's okay. Since the name might be unique, maybe it's a personal project. Another angle: Maybe "i s a" are initials for an author