Where to get BDI-4
The latest release (currently 4.51) can be downloaded from:
ftp://bdi4emc.ourproject.org/pub/bdi4emc/
http://www.tabletopmachinewiki.com/wiki/EMC_BDI-4
http://www.cncgear.com/EMC/BDI/
bdi-4.51.iso 5d1b95d42ec26ea227abcd8bc7112a98
An older BDI-4.38 release is still available. Please consider using the current release to take advantage of bug & security fixes.
http://mirrors.neuron.com/emc-bdi/
BDI-4.38 md5sum: 0f74ceef21faff217d9ae1abd252e8cd
On dialup ?
If you are unable to download a 622Meg file, post a request to the mailing list. Chances are, someone will be willing to send you a copy.