moving from VS 2003 to VS 2012, trying to resolve missing references

Please be warned: I am not well acquainted with .NET programming as I only have occasional need for it.

I'm working with a smallish app/solution written in VS 2003 (VB) and I want to make it run on .NET 4.5 and maintain the project in VS 2012. I'm currently encounting some roadblocks. Can anyone help me resolve these?

Firstly, I downloaded SAP Crystal Reports which seems to have worked at fixing certain broken references.

Problem 1: Word.Application is not defined
My error list shows one error: "Error 104 Type 'Word.Application' is not defined. F:\app\Builder\Form1.vb 5844 27 Builder"

Problem 2: There updated references for some components
Error list, another error: "Warning 1 There are updated custom wrappers available for the following referenced components: Office ,VBIDE ,Word. Builder"

Problem 3: cannot locate assembly Interop.VBIDE
Error list error: "Warning 2 Could not resolve this reference. Could not locate the assembly "Interop.VBIDE". Check to make sure the assembly exists on disk. If this reference is required by your code, you may get compilation errors. Builder"

Why are these references broken? Any suggestions in helping me to understand and resolve these would be greatly appreciated.