2、Try this then. Go to Dashboard - Design - Edit HTML - Find and delete the following line <b:widget id='Blog1' locked='true' title='Blog Posts' type='Blog'/>
Change the width and height as per the dimensions of your file. Instead of 'MYFLASH.swf' and 'URL OF MYFLASH.swf' put the relevant details of your flash file and paste the code in a Html/Javascript Page Element in the sidebar. See how to add widgets to blog. For example I have a flash navigation widget at the end of the right column of this blog. See it here also (below) :