sort of have to know what the batch file looks like before anyone can tell you why it might not be working
Fail of the day.
+1
this bat file:
"start /DC:\bitcoin\poclbm_py2exe_20110428 poclbm.exe -d1 --host=deepbit.net --port=8332 --user=hieu5189@gmail.com_0
--pass=123456789 --device=0 -w 256 -f 60"