jpeg: /opt/local/bin/cjpeg already exists and does not belong to a registered port

[Kelly.Morgen@…]

I'm a totally newbie here, just trying to install Wine on my Mac OSX version 10.5.8. Everything was installing fine, until I hit the following:

kelly-morgens-macbook-pro:~ kellymorgen$ sudo port install wine
Password:
--->  Computing dependencies for wine
--->  Dependencies to be installed: jpeg lcms tiff libpng libxml2 libxslt mesa makedepend xorg-xproto py27-libxml2 python27 bzip2 db46 gdbm openssl python_select sqlite3 tcl xorg-dri2proto xorg-glproto xorg-libXfixes xorg-fixesproto xorg-libX11 xorg-bigreqsproto xorg-inputproto xorg-kbproto xorg-libXau xorg-libXdmcp xorg-libxcb xorg-libpthread-stubs xorg-xcb-proto xorg-util-macros xorg-xcmiscproto xorg-xextproto xorg-xf86bigfontproto xorg-xtrans xorg-libXi xorg-libXext xorg-libXmu xorg-libXt xorg-libsm xorg-libice xorg-libXcomposite xorg-compositeproto xorg-libXcursor xorg-renderproto xrender xorg-libXinerama xorg-xineramaproto xorg-libXrandr xorg-randrproto xorg-libXxf86vm xorg-xf86vidmodeproto
--->  Activating jpeg @8c_0+universal
Error: Target org.macports.activate returned: Image error: /opt/local/bin/cjpeg already exists and does not belong to a registered port.  Unable to activate port jpeg. Use 'port -f activate jpeg' to force the activation.
Error: Failed to install jpeg
Log for jpeg is at: /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_ports_graphics_jpeg/main.log
Error: The following dependencies were not installed: jpeg lcms tiff libpng libxml2 libxslt mesa makedepend xorg-xproto py27-libxml2 python27 bzip2 db46 gdbm openssl python_select sqlite3 tcl xorg-dri2proto xorg-glproto xorg-libXfixes xorg-fixesproto xorg-libX11 xorg-bigreqsproto xorg-inputproto xorg-kbproto xorg-libXau xorg-libXdmcp xorg-libxcb xorg-libpthread-stubs xorg-xcb-proto xorg-util-macros xorg-xcmiscproto xorg-xextproto xorg-xf86bigfontproto xorg-xtrans xorg-libXi xorg-libXext xorg-libXmu xorg-libXt xorg-libsm xorg-libice xorg-libXcomposite xorg-compositeproto xorg-libXcursor xorg-renderproto xrender xorg-libXinerama xorg-xineramaproto xorg-libXrandr xorg-randrproto xorg-libXxf86vm xorg-xf86vidmodeproto
Error: Status 1 encountered during processing.
To report a bug, see <http://guide.macports.org/#project.tickets>

I have no idea what to do next... I think I accidentally installed the jpeg earlier... can you tell me how to delete it so it can be reinstalled in Wine? Or whatever I need to do? thanks so much.