you didn't say what kind of network setup that you have. do you have a corporate network that use's dsl for internet access, or this will be standalone? Is the printer on the corporate side of the network? Or is it connected to the laptop directly.
Lot's of way's to do this, depending on what you need for security, ect.
Alot of dsl routers today come with wireless built in, along with ethernet and usb. you could use a wireless jet direct for the printer also.
This depends alot on what you need for security, ect.