Hi,
Fixing such kind of errors is exactly what I've been doing for the past few months, so I'm not getting worried whenever I see them ;-)
The last three issues are due to a missing file, so, this file should be rewritten. The other ones have to do with function calls and should be easily resolvable. More specifically, the function set_magic_quotes_runtime() should not be used at all.
I estimate that it will take me about two hours to trace and fix all the errors, provided that no more errors will come up. I won't charge you for more, because it's a very simple project, but please bear in mind the time difference and don't ask me to work after midnight ;-) i.e. you should expect the work done in one day.
If you please allow me to see the rest of the code before bidding ends, I can be more specific. Otherwise, if you're not interested in my bid, please send me a note, so that I can retract it and save it for other projects.
Thank you