Just had a look at a site called ScanWith.com and they are saying that Sp@mX is freeware and the Windows version is there for downloading.
I have paid for my copy of Sp@mX (Mac version) and therefore don't think it is fair for others to get it for free just because they are using a different platform.
I presume this is either a different program or you are not aware of this.
Regards,
James.