Weird DUN Activity

Here’s the situation: 5 computer Workgroup. All machines running Win98 SE. We recently purchased a HP 4550N color laser that is attached to the network with a JetDirect card. Every machine, except one, can print just fine. One machine, when you senda print job, launches DUN prompting you to connect to our BellSouth dial-up service. After closing DUN the print job goes through just fine. Everything works, it’s just that this is annoying much like people who never close their questions. Anyone ever seen this happen?