Hey khsuh - Just got an RP250 from Ebay a few weeks ago - loving it! To record my guitar, I use a 1/8" to 1/8" plug from the headphone out of the RP250 into the line-in of the soundcard. This way there is no latency. (and I use waveout on sound settings as the ASIO drivers always seems to pop and crackle with VSTs). (Greaser is my favorite lead patch btw) I do the same for my vocals. I have a 1/4" plug adapter at the end of my mike cable and plug it into the RP250 in the same place as my guitar. I then go into bypass mode. The key to recording volume is using the control panel of your sound card. Set it to 'line-in', and then adjust the line-in a recording levels. I find around 70% gives me a good level. You ever venture to the digitech forum? CH