Developer Edition & Express Edition

Can you install both of these on the same Windows XP Pro computer? If I don't want to install the Express Edition what is the best way to make an application developed with Express Edition work with Developer Edition?

If someone could point to some articles or documents that explains this in detail I would really appreciate it.

Thanks.

Express and Developer can install side-by-side. Application should be developed Edition agnostic. However, there is a feature in Express (User Instances) that is not available in other Editions. Keep an eye on MSDN for new content.

Dan
http://blogs.msdn.com/dtjones