What you could do is create a folder on the desktop, copy the fonts over to this new folder (if you wanted all the fonts over in the C:\Windows\Fonts folder, you could hit ^A [^ is the abbreviation for the Ctrl key--so it would be Ctrl-A] to select all the files. Edit-Copy. Open the new folder on the desktop and hit Edit-Paste
Check the size of the folder--in WinXP there should be a little blurb on the left hand side titled "Details." Select all the files in the new folder and expand it (should be a little round button). Most emails have a size limit of 10MB; you may need a compression program (e.g. WinZip; WinRar; 7-zip--i personally use 7-zip). Compress the files as a ZIP file and you should be able to send via email.
Other way is if you have access to FTP or a webserver would be to post the ZIP on the webserver and provide a direct link to the ZIP.