Yes, though P/Invoke.
See these:
http://smartdevices.microsoftdev.com/Learn/Articles/500.aspx
http://smartdevices.microsoftdev.com/Learn/Articles/501.aspx

Signature
Chris Tacke, eMVP
Co-Founder and Advisory Board Member
www.OpenNETCF.org
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Windows CE Product Manager
Applied Data Systems
www.applieddata.net
> Ok, I know that a c++ program cannot use a dll created
> in .net, but, can a .net(c#) program use a dll that was
> created in c++? (Evc4.0)