Microsoft has released a .NET charting component but it only supports .NET 3.5 and later. If you can't migrate to a newer version of .NET then you will need to use a third-party tool. ZedGraph is a popular, free option. If you want to use it then I'd suggest that you download and install it and then check out the samples provided on their web site. If you need more help then start by searching the web. If you still can't find what you need, post a specific question back here.