  We have developed a data reduction procedure to extract multiple spectra from
a single two-dimensional Space Telescope Imaging Spectrograph (STIS) image of a
crowded stellar field. This paper provides a description of our new technique,
utilizing a STIS ultraviolet spectral image, acquired with the G140L grating
and the 52 arcsec x 2 arcsec aperture, sampling a concentration of O and B
stars in the central region of the NGC 604 starburst in M33. The software
routines can disentangle and produce reliable ultraviolet spectra of stars with
angular separations as small as 0.055 arcsec. Use of the extraction slit, based
upon our model of the spectral cross dispersion profile, generates spectra with
slightly higher resolution than the STScI standard processing. Our results
clearly show that the spectral imaging capability of STIS represents a powerful
tool for studying luminous stars in the star-forming regions of the Local
Group.
