The files will be too large to email, so you'll need to store them on a USB stick, external hard drive, or create a free Windows Live account to store up to 5GB on the SkyDrive online. You might need to recreate the iDVD project to some extent just to tell the project where the video files are. Depending on how advanced the project is, it might be worth it just to recreate the project on the other computer. This might be a better option because if you're using different versions of iDVD, which is quite likely. iLife '08 has many compatibility issues, and other versions do as well. You're best off getting the video files to yourself somehow and recreating the project for DVD using their computer for iDVD. If the methods of file transferring I listed above don't work, connect the 2 computers with an Ethernet cable and you can find the information on direct file transferring online. Hope that helps!
