Right the detection might be good, I have msvcm90.dll on my system, but not msvcm90d.dll (so I couldn't scan that one).
My scan of msvcm90.dll came up clean (on winXP Pro SP3)
There are two copies of this msvcm90.dll file in different locations both came up clean (see image), the MD5 and SHA1 hashes are below.
MD5:
67BDB40FBE6CECC320507161B58D134A
SHA1:
11EC8313BA20E96A0F776A018586CC127A451E16
So I would advise, confirming at VT.
You could also check the offending/suspect file at:
VirusTotal - Multi engine on-line virus scanner and
report the findings here the URL in the Address bar of the VT results page. You can't do this with the file securely in the chest, you need to extract it to a temporary (not original) location first, see below.
Create a folder called
Suspect in the
C:\ drive. Now exclude that folder in the
File System Shield, Expert Settings, Exclusions, Add, type (or copy and paste) C:\Suspect\* That will stop the File System Shield scanning any file you put in that folder.