Perhaps I have a proxy issue over here but if anyone could tell me, does the title match what's listed for downloads?
»www.microsoft.com/en-us/download ··· id=11876Microsoft Exchange Server 2007 Management Tools (32-Bit)
E2K7SP1EN32.exe 840.6 MB
E2K7SP2EN32.exe 870.0 MB
E2K7SP3EN32.exe 878.9 MB
Those look like service packs.