This has been asked a few times already. No offense, but please try and do a modest amount of searching before you post a question. Here are a few results I got with a simple search:

• How do I send an email with Perl (including an attachment)? (in Q&A mail and news)
• email form with a file attached (by you)
• Attach a file to email
• extract data from a form .. and attach a file in sendmail