Hey old man (from someone who started existence quite some time ago, although quite not before it was possible to buy TVs)
There are essentially two ways:
1. Use something like 7-Zip that's capable of splitting files into chunks of desirable sizes and send each such chunk as an E-mail attachment (with the risk of warnings that you're sending very large files). Sami is capable to collecting these parts and assemble them into a ZIP file he can extract. This is the (fairly dated method I've mostly used). 10 MB chunks tend to go through most mail servers.
2. Use some kind of file sharing service such as e.g. Dropbox (the one I've used for such tasks, although I'm not sure I've used it with UrW. In that case you need to get hold of the SW, install it, and drag the file you want accessible (you character folder zipped up). That should allow you an option to get the link for the file you want to make available. You'd then post that link in an error report post or an email to Sami (the latter is probably the best), together with all relevant data you have on the issue (Be a pal and don't just refer to the bug post. Help the poor guy by providing both a description and a reference to the bug report [so he has an easier time finding it when it's time to cross it off the list]).
The email address to Sami is "
sami@unrealworld.fi", which I think can be found somewhere among web site's contact info, although I took it from my address book (as a result of earlier bug reports), as I was too lazy to look for the proper reference which I'm rather sure is the same.
If something causes trouble, I can try to help further, but I'm somewhat technologically damaged due to having a computer background, so I may miss "obvious" steps and stumble blocks: Thus, I may need help to help you;)
I think Privateer may indeed skip a few steps, so my rambling description may provide some additions.
As far as I've seen, this is generally a very friendly forum where people try to help out without pointing fingers at those who don't know exactly everything they not.