a user I support has this problem on XP Pro, Outlook 2003. "Send To" a "Mail Recipient" opens a new mail msg, with subject line & doc attached, & after addressing to whom to send it to, clicking "Send" does nothing, th enew msg just sits static, with Outlook open. From Outlook you can attach & send same doc okay. User does have correct C:\Documents and Settings\user\SendTo\Mail Recipient.MAPIMAIL file. The "Send To" a "Mail Recipient" works fine on other identical user PCs. Are there Registry settings to verify? Or, regsvr32 sendto.dll?