Yes, it runs fine from the command line. According to Windows task manager the username it's running under is "user", which is me. ps seems to tell a different story:

$ ps -Wa | grep Apache
 PID PPID PGID   WINPID  TTY UID  STIME    COMMAND
3748   0    0     3748    ?   0   07:22:19 C:\usr\local\apache\Apache\
+Apache.exe
[download]

Thanks again for your help