Newby tips!!

do you have the latest drivers for the focusrite?  is this a 32bit win7 or 64bit win7 machine?  do you have the correct drivers for the version of win7?

which driver mode are you using?

Hi I have managed to sort the buzz out now, just need to figure out how to add a reverb effect whilst im singing along to a track...

Beagle is spot on. Latency is the time it takes for your signal to enter the computer, be pumped thru whatever program or processing you do, and back out into audio again. Depending on what version of Sonar you are using those settings can be found in your audio settings in Preferences. I use a Focusrite on my laptop which has X2 loaded on it for working on the go. You also want to check if your drivers are set for WDM or ASIO. You will also find that setting in Preferences. ASIO has always worked better FOR ME. Some people have had great success using WDM/KS drivers. At any rate, on your audio settings page you should see a slider that defines how fast or slow the latency is. There is a button under that slider. If the slider is not greyed out and the button does NOT say ASIO, you need to go to the next page to reset the drivers. On that page you will see a drop down box that has the name of the driver you are currentlly set to use. Click the drop box and you will see ASIO on the list. Click ASIO. Re-start Sonar, go back to the audio settings page and see if the button now reads ASIO. The slider should be greyed out. Now when you click on that button your Focusrite Control Panel will come up. Then you can adjust your latency. The lower the number of samples, the faster your audio gets processed, thus, lower latency. Adjust it until you hear a slight distortion or clicks or pops. Then back it up to the last setting that you got good clean audio with and leave it. My settings in Sonar on an Intel i5 rig usually are set at 128 to 256 samples. Thats with lots of higher grade third party plugins and I use nothing but virtual instruments. If I use just the Tts-1 for GM purposes I have gotten down to 64 samples which is pretty amazing to me. I remember when I first started out in computer recording I was lucky to get down to 512! The lower the latency the less echo effect you will have on your input monitoring. I know this is a lot of info but take your time, follow the instructions, and you should be able to get that latency down on your Focusrite.