Can I use a dll created in Visual Basic 2010?

I am reading up on the new extention system for air 3.0.
I have successfully (I think) managed to integrate the Air 3.0 prerelease into Flash CS5.5 (I don't use flex or flash builder)
So now I am trying to read up and learn how to use extentions.
Now, I don't know C/C++. My experience with it has been very limited over the years. But I know visual basic pretty well as I have been using that since VB4. (back in the programming stone age, heh)
Right now, I have Visual Studio 2010 and Flash CS5.5.
I am developing for the iPhone and iPad and up until now I have created a working iOS application that works pretty well.
Can I create a dll in visual basic (A class library) and then use the extention system to load that into my application to run on the iOS mobile device?

I thought I'd seen this question asked somewhere before, but I can't find the thread. In theory there should be no problem. However, you'll need to have both the LabVIEW 5.1 and LabVIEW 8.6 run-time engines installed, and I don't know if there are any operating systems on which both of those versions are supported. If the run-time engine is properly installed, then calling a LabVIEW-built DLL is just like calling any other DLL. There might be some special optimization if the calling application and DLL both use the same version of the run-time engine.

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