DTS Failed To Run

Hi all,

I have almost 50 DTS and its was scheduled run daily at a specific
time. Since last week all the jobs was failed. Error "The process could
not be created for step 1 of job 0x43434..... (reason : The system
cannot find the file specified). The step failed.". The jobs was run
find before. If I manually execute package under Local Package it ok.
I'm not a DBA. Any help are welcome.Find the solution under and it work now.
http://support.microsoft.com/kb/322746/en-ussql