I have multiple vba's written for microstation and I was wondering if there is a way to import them into acad2011.
Are there any similarities between the two pltforms in regards to vbas?
In Microstations VBA IDE you should be able to export the code to FRM/FRX and BAS files. These files could then be imported in AutoCAD's VBA IDE. Then comes the problems:
First, there are bound to be procedures specific to getting/creating objects and more that are MSTA specific. Those will have to be changed to accomodate the differences in AutoCAD. It won't be as simple at export/import.
Second, unless you plan to stay with 2011/2012 forever, why bother. It is rumored (or possibly stated) that Autodesk will remove VBA at some point in the near future.
In summary the best choice would be a complete rewrite using the Managed .NET API. This would provide the conversion with an actual future and result in a better, faster application.