Try the new ASP.NET Charting control instead.
Microsoft has released sample/demo apps for both Web and WinForms. Below is a set of links to everything you need to get your environment setup and the samples.
http://code.msdn.microsoft.com/mschart
The library, VS add-in and documentation are on the Microsoft download site. I found everything I need using "Windows Forms Chart Control" as my search term. Below are the paths once you get to the Microsoft server. I'd give you the full URL, but I hit the link limiter (1 link per post)
MSChart.exe: /downloads/details.aspx?FamilyId=130F7986-BF49-4FE5-9CA8-910AE6EA442C&displaylang=en
Visual Studio 2008 Add-in: /downloads/details.aspx?familyid=1D69CE13-E1E5-4315-825C-F14D33A303E9&displaylang=en
Documentation (chm file): /downloads/details.aspx?familyid=EE8F6F35-B087-4324-9DBA-6DD5E844FD9F&displaylang=en
I like the sample winform app because you can browse through the various implementations looking for what fits your needs. Scatter, Pie, Bar, Interactive, Mixed... It's all there.
As for the actual tool, it works. It may not be as full-featured as other 3rd party charting tools, but the price is right especially when capital budgets are very tight.