Does it say anything else other than error 1069? I've never seen that error.
Do you get it after having seen a Citrix login screen, or don't you get that far?
If your standard dial-up works, can you authenticate to an NT/2k server using that and then launch the ICA client?
If not, then maybe your client configuration requires some investigation;
Check the server location field; does using the IP address of the Citrix server work? If not, are you using alternate addressing over a firewall with NAT? Try the alternate address inthe server location field.
Check your clients IP stack - is there an alternative set up for remote networking? CitrixEngineer@yahoo.co.uk