Fileuploader not working on IE Browsers

Question

I need to upload files on page. For this i use FileUpload class in watin but it hangs when fileupload dailog box opened...

Here is the code for it -

FileUpload filePlan = projectbrowser.FileUpload(Find.ById("filePlan")); filePlan.Focus(); filePlan.ClickNoWait();

I am unable to set file for upload class. i also used filupload.set ("filename") but it did n ot worked. Please help me..............