Pull subscription and ISA server

Hi
Can anyone point me in the right direction, I am trying to do an anonymous
pull subscription across the internet. I have created a publisher and created
the snapshot ok. On the subscriber server I can FTP by IP ( the ISA servers
external IP address ) or by the servers name and can see the folders created
in the repldata\ftp directory. I can create a new SQL server registration on
the subscription server and get a connection into the publisher, I can run
sql queries against the publisher ok.
When I try and create a pull subscription, I get to the last page on the
wizard and get
SQL Server enterprise Edition could not create a pull subscription to
publication 'MyDB'
Error 21776: [SQL-DMO] The name 'MyDB' was not found in the TransPublications
collection
Any help greatly appreciated
Having reinstalled and rebooted several times yesterday I was getting nowhere
hence my post in this NG
Come back to it today and the pull subscription worked first time without
any errors on yesterdays configuration. Wierd ?
Anyway, if any one can shed any light on what was going on when it was
failing, please let me know.
thanks

Publisher set to Simple Recovery - Is this a problem?

If the publisher database is set on simple recovery mode and if the
transaction log gets truncated on check point, then is there a chance that
the rows that should be replicated might get lost before the log reader agent
can read them and send them to the distributor. Publisher is a 7.0 box and
the distributor/subscriber is a 2000 box.
Adam,
the rows won't be removed unless the log is marked by sp_repldone, so you're
safe.
Cheers,
Paul Ibison SQL Server MVP, www.replicationanswers.com
(recommended sql server 2000 replication book:
http://www.nwsu.com/0974973602p.html)