ris
I looked it up and aparently it's this

Radar Integration System
RIS Radar Interrogator Set (associated with joint surveillance system)
RIS Radio Investigation Service
RIS Radiology Information System
RIS Rail Interface System
RIS Rail Interface System (accessory mount on guns)
RIS Random Interleaved Sampling
RIS Range Instrumentation System
RIS Raumbezogenes Informationssystem (German: Spacereferred information systems)
RIS Readiness Information System
RIS Recreation and Intramural Sports
RIS Redundant Information Sector (COMPAQ)
RIS Redwood Inspection Service
RIS Regional Innovation Strategy (European Commission)
RIS Regulatory Impact Statement
RIS Regulatory Information Service
RIS Reinforced Insulated Sheath (Star Wars armor)
RIS Relocation Information Services
RIS Remote Installation Service (Microsoft Windows 2000)
RIS Reparti Investigazioni Scientifiche (Italy, Carabinieri)
RIS Report/ing Identification Symbol
RIS Representative Indicator Species (US EPA)
RIS Request for Information Services
RIS Research Investment Strategy (Australia)
RIS Resonance Ionization Spectroscopy
RIS Restricted Instructional Setting
RIS Retirement and Insurance Service (a component of OPM)
RIS Retirement Income Specialist
RIS Retroreflector In Space
RIS Review of Information Science
RIS Reviving the Islamic Spirit (conference)
RIS Ridgecrest Intermediate School
RIS River Information Services
RIS Robotics Invention System (LEGO)
RIS Romulan Imperial Ship (Star Trek)
RIS Roosevelt Intermediate School (Westfield, NJ)
RIS Radio Information Service
RIS Raster Image Set
RIS Recoverable in-Doubt Structure
RIS Reduced Instruction Set
RIS Remote Installation Server
RIS Research and Instructional Support
RIS Retail Information System

I was thinking more like RSI with the carpal tunnel reference?
(misskitty reeks of sex and turpentine; laudanum afternoons, Tue 27 May 2008, 4:55, Reply)