Connect XP to AirPort Base

I would like to configure my PC laptop on my Office's AirPort network.
Unfortunately, I do not have time for trial and error while at work
(they expect to do my job not troubleshoot my network issues and the
tech guy just left the company). Please let me know if you could lead
to some resources for network connectivity utilizing the AirPort. My
Laptop is running Windows XP Pro. The ISP is Pacbell DSL; and tech
support is dismally. Basically, I see the wireless router and
connect as with my home wireless router. This AirPort has a different
setup for some reason. I do not believe encryption is set. What
information do I need to connect? What other issues should I
investigate? My wireless card does pickup the AirPort Base.