  We report the results of an extragalactic point source search using the 61
and 94 GHz (V- and W-band) temperature maps from the Wilkinson Microwave
Anisotropy Probe (WMAP). Applying a method that cancels the ``noise'' due to
the CMB anisotropy signal, we find in the $|b| > 10\degr$ region 31 sources in
the first-year maps and 64 sources in the three-year co-added maps, at a
$5\sigma$ level. The 1$\sigma$ position uncertainties are 1.6' and 1.4' each.
The increased detections and improved positional accuracy are expected from the
higher signal-to-noise ratio of WMAP three-year data. All sources detected in
the first-year maps are repeatedly detected in the three-year maps, which is a
strong proof of the consistency and reliability of this method. Among all the
detections, 21 are new, i.e. not in the WMAP three-year point source catalog.
We associate all but two of them with known objects. The two unidentified
sources are likely to be variable or extended as observations through VLA,
CARMA and ATCA all show non-detection at the nominal locations. We derive the
source count distribution at WMAP V-band by combining our verified detections
with sources from the WMAP three-year catalog. Assuming the effect of source
clustering is negligible, the contribution to the power spectrum from faint
sources below 0.75 Jy is estimated to be $(2.4\pm0.8) \times 10^{-3} \mu K^2$
sr for V-band, which implies a source correction amplitude $A = 0.012\pm0.004
\mu K^2$ sr.
