SAP frontend - Workflow with windows vista

I have a problem using Windows vista and workflow together, The problem is:

1. In the workflow definition SWDD I'm not able to see some of the texts in the definition like the workflow number and other main information.

2. In the execution of a workitem, I can not see the text in the screen below (description of the workitem, Object and attachements)

Does any one knows any solution about it?

Thanks a lot

Felipe Uribe