setupeng.exe

I have 2 files on C:\ drive that I would like to know whether it is OK to delete.
The files are “setupeng.exe” and “setuupengpro.exe”. Each is over 9 MB in size.
I have Avast 5 installed.
???

Looks like these are old (very old) avast installation files as the current avast installation files setup_av_free.exe is around 56MB for the latest version 6 beta. Version 5.x would still have been around 52-53MB.

What are the creation/modification dates on the files ?