The CISSP requires three years of hands-on, information-security experience, so unless you've been reasonably technical in your sales job you may have to do some fast talking to meet that requirement. That said, if you can take and pass the exam, you should certainly be entitled to carry the certification. Visit http://www.isc2.org for more information on CISSP requirements; if in doubt, call or e-mail the ISC-squared. I've done so several times myself and found their phone staff to be polite, quick and very well informed.
For more information on this topic, visit these other SearchSecurity.com resources:
Ask the Expert: Online resources available to study for the CISSP exam
Article: Cert Spotlight: CISSPs 'know' security
Article: Specialty certifications carry clout in 2003
This was first published in April 2003