Loren -
Microsoft stopped supporting VBA with SOAP toolkit with Excel 2010 (64 bit). I have the same problem on my machine. I spent 1/2 a day a few months ago researching for an updated SOAP toolkit library, but Microsoft has killed it. The general consensus on all articles and discussion groups I found is that there is no solution other than following Microsoft's wishes......
...with Excel 2010 64 bit, you need to start using .NET plug ins, and use our .NET code examples. It's 100 times more complicated than our VBA examples with Excel, but I've come to the conclusion that our hands are tied.
Are you a .NET coder? If you know VBA, Visual Basic .NET is a logical next step.
Paul