Initialize Attachment Manager in 2007

[XLEAccessGuru]

I searched help and this forum to no avail. Anyone know the code to initialize the attachment manager in Access 2007?

Also, anyone have any suggestions for testing the file sizes of the attachments users are adding? For example, if I want to test that the file(s) attached are no more than 3 MB, how would I do so?

Any/all ideas welcome.

Thanks.