File is not uploaded

[eluser]alberta[/eluser]
when i only upload a file and doesn't include the other fields like "attached_on" and "is_active", then file is successfully uploaded. But when i include these two fields and uploas a file then it shows "You did not select a file to upload".

Should i create two forms, one for just uploading and second for other fields?? If some one has any other idea, kindly tell me..

Any help would be appreciated