my laptop keep putting up the following 2 messages

1      windows cannot find   'C:\PROGRA~2/ONLINE~1\bar\3.bin\AppIntegrator.exe'. Make sure you typed the name correctly, and then     

try again.     thing is I never entered this command

2      t8ExtPEx.dll  is missing

 these 2 messages come up in a little window box on the screen every 10 seconds or so if I close them down.....