--Will it work with a online wallet? I'm using mymonero.com. (I wasn't able to get the Light Wallet working, even with simplewallet in the same directory, and the full wallet gets stuck downloading the Monero blockchain at about 90% for days now, so I closed it.)
Yes it will work.
--How long will it take to pay out some XMR? I've been running the One-Click Monero Miner for 7.5 hours. Was expecting to at least get some dust by now.
I cannot tell. It depends if you reach the minimum payout and it depends on how often the pool do the payouts per day.
You can mine with multiple computers on the same address to accelerate the payout.
--Do you have the source code for the One-Click Monero Miner anywhere? I'd love to adapt it to some other CryptoNote coins. I saw about 40 pages back where someone asked for source code, but it seems like the answer was to the Monero source, not to the One-Click Monero Miner source.
I will send you via PM when I find it. It's on one of my laptop somewhere.
It will be easy for you to update and improve it.
--Avast flags the One-Click Monero Miner as a virus. Based on your trust level on here, I'm sure it's not. And I'm running it on a spare machine with no financial info or passwords (other than MyMonero). Is this just an issue of Avast?
Thank you for your service!
Avast will flag any CPU miner as a virus because there are a lot of virus that use the CPU to mine. It's normal, no worries.
If I was a hacker, I would not bother building a reputation.