After lots of asking around and digging through google and MS windows, I found the answer for the error message poping up everytime I want to run an exe file on the network "Publisher could not be varyfied, do you want to continue" etc. It is amazing how much rubbish you go through to get the right solution. This is what you have to do :

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"The publisher could not be verified" prompt running executable from network
Sunday, June 25, 2006 at 11:40 am
Posted by eatyummypuppies (1 messages posted)

This isn't a question but a tip. I feel the need to post it somewhere because I've
been looking for the answer (half-ass-edly) for years. (I finally just figured it
out on Vista, but I'm sure it applies to XP SP2 also.)

Problem:
Running XP SP2 or higher, you try to run an executable located on another machine
on your network. Your accosted with a prompt: "The publisher could not be verified".
You are forced to confirm that you wish to run this program... every time you run
it.

Solution:
Run gpedit.msc

Go to User Configuration >> Administrative Templates >> Windows Components >> Attachment
Manager

Add "*.exe" to the "Inclusion list for moderate risk file types" setting.

"This policy setting allows you to configure the list of moderate risk file types.
If the attachment is in the list of moderate risk file types and is from the restricted
or Internet zone, Windows prompts the user before accessing the file. ..."

In other words, this allows you to run an .exe from the Intranet zone without a prompt,
but it will warn before running one from the Internet.

(If you Google, a lot of people are instructing to add *.exe to the list of low-risk
file types, allowing .exe files to execute from anywhere on the internet. A lot of
other solutions that simply don't work are floating around as well.)
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Hope this helps someone out there.