3. improve the speed ( more important than anything )
As this is the most important thing, I recommend expanding upon what you mean so it's clear. I have always found mIRC starts up quickly, if it isn't, then it might be your computer rather than mIRC itself, or a 3rd party program. If you mean connecting to a server though, that's really not much to do with mIRC but a range of other issues that it may be.
Regards,
