Using wget to turn digest mode on/off

I need to be able to interact with MailMan via php without using the command line, so I've been playing around with using URL commands. I've been able to do several things in MailMan using wget (and php's file_get_contents subroutine), but there's one that's eluding me.
Here's what I CAN do:
List the mailing lists on the server:
List a user if they're in a given list. It also shows whether they're using digest mode.
http://<domain>/mailman/admin/<listname>/members?findmember=<user>@<doma in>.com&adminpw=<pw>
Subscribe a user without telling anybody:
http://<domain>/mailman/admin/<listnam>/members/add?subscribe_or_invite= 0&send_welcome_msg_to_this_batch=0¬ification_to_list_owner=0&subscrib ees_upload=<user>@<domain>.com&adminpw=<pw>
Unsubscribe a user without telling anybody:
http://<domain>/mailman/admin/<listname>/members/remove?send_unsub_ack_t o_this_batch=0&send_unsub_notifications_to_list_owner=0&unsubscribees_up load=<user>@<domain>.com&adminpw=<pw>
BUT what I CAN'T do is turn a user's digest mode on or off.
I've tried:
http://<domain>/mailman/options/<listname>/<user>--at--<domain>?digest=0 &options-submit&options-submit&adminpw=<pw>
But that doesn't authenticate. On the real web side, it works if you authenticate FIRST with another page, then call the user's options page after you're authenticated as the admin, but I don't think I can do that with wget.
I've tried:
http://<domain>/mailman/admin/<listname>/members/list?lfind_member=<user
@<domain>&digest=off&setmemberopts_btn&adminpw=<pw>
But there I've got the problem that an unchecked radio button doesn't show up. I've tried several iterations with no luck.
HELP! (TIA)
W. Curtis Preston
Author of O'Reilly's Backup & Recovery and Using SANs and NAS
VP Data Protection
GlassHouse Technologies
participants (2)
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Curtis Preston
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Stephen J. Turnbull