Help!  What should I do about this?

I purchased a module (two actually) from the store last night and installed with no problems.
When I accessed the site without even logging in, my desktop Security Essentials started picking up several Trojan viruses.

I don't want to list the module(s) and impugn the author in case it is not directly attributable. 
However, the severity is high.  Here is the output from the Quarantined items.  How do I fix this on my site?  Who do I contact about the module?

Category: Exploit
Description: This program is dangerous and exploits the computer on which it is run.
Recommended action: Remove this software immediately.

Items

file:C:\Users\Tom\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\9E73ZK8B\dnn.controlBar[1].js
file:C:\Users\Tom\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\9E73ZK8B\dnncore[1].js
file:C:\Users\Tom\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\L5VBOK6P\Default[1].htm
file:C:\Users\Tom\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\M3Y12PR0\dnn.modalpopup[1].js
file:C:\Users\Tom\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\M3Y12PR0\dnn.servicesframework[1].js
file:C:\Users\Tom\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\M3Y12PR0\dnn[1].js
file:C:\Users\Tom\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\M3Y12PR0\json2[1].js
file:C:\Users\Tom\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\UTGQN92V\initWidgets[1].js

HELP!!!!!

I am having the same problem, but I have not added a module in many months.

I have turned my site off and I may have to just delete my site and start over, but WOW that will be a lot of lost time.

Did you determine where the problem came from?

How did you solve the problem?

I would appreciate any suggestions or comments.

You can send me direct email at Joel@Pearland.com