It would be helpful to know the particulars of the problem that you are experiencing. Such details include:
The stage in the upload that you are (e.g. have uploaded, but are now having trouble seeding)
The torrent client that you are using (e.g. uTorrent)
The operating system you are using on the computer that you are trying to seed with
The particular error message you are receiving (if any)
More detailed information on the problem or symptoms that you are experiencing (e.g. uTorrent says seeding, but the tracker doesn't)
Whether you are using QTM (Quick Torrent Maker) or your torrent client to upload the new torrent
With this information, it would be a lot easier to provide you with a more definitive and detailed solution to fix the problem that you are having and get you on your way to a successful upload.