Hi there,
1st. Thanks for your intrest in using and buying your licensed copy of mIRC.
These are the answers for your question.
- The registration fee for the mIRC license is for recent and further versions of mIRC, it is payed once and for all.
- Yes you may open more then one mIRC client
- NO you pay for a mIRC license once and forever, whenever you install it again or open 2 or more mIRC main windows "mIRC.exe" it does NOT require another registration.
You can register your copy of mIRC by following the instructions
Here.