Installed MikTeX and WinEdt 5.4 and faced with unknown problem at the very beginning! Texify shows the error:

texify failed to create a dvi file. For possible explanations start the command prompt or read the Log file (captured by WinEdt during the execution)..

Btw, log file is not active (anyway I don't know what to do with it).

Has anybody any ideas?
Would appreciate any tips..