Help, not an experienced excel user, I need to make a chart to show the different dates for each different stages of projects. Sort of like a timeline

Each project has a code, start date, architecht date, impact date and proposal date.
When I try to chart the information in excel using a stackable bar chart I'm finding it impossible to get it to show correctly. It ends up with the dates everywhere and not listing all the projects. I've tried all the things I can think of (choosing rows instead of columns etc)

Unable to post example data due to company restrictions, but if you think you can help, then I can e-mail the data direct.

Think it should be a fairly easy thing to do but I'm confused!!

HELP!