As a short term solution: If you're having a problem with delay, make sure ASIO drivers are selected in your DAW. If not (For instance WDM), select it in the drop down menu. Chances are, your soundcard won't officially support this feature as it's not a required feature for most users. Visit
http://www.asio4all.com/ and download and install the software. As far as I have seen, it's pretty much bug free, and works straight away after installing. It should show ASIO as an option.
ASIO drivers are useful as they bypass all the windows protocols and work direct with the end hardware, making a latency as much as seconds, turn into around 8ms - 128ms depending on your computer speed.
Background noise will happen with everything, so the best way to temporarily get over this, is to have recorded sound as close to clipping as possible. The difference between the ambient noise and the wanted material is greater, (For every dB you increase the difference, is 1dB you can lower the hiss. To fix anything you've had already, there is a really good hiss removal plugin from Sonnox Oxford suite.
http://www.sonnoxplugins.com/pub/plugins/products/products.htm I BELIEVE it's the suppressor but it was a while ago now since I used it. There's a tutorial on their website and it explains how to use the product and what it's capable of.
You may find that it could be the Behringer plugin that's contributing to some of the noise. I don't want to foul mouth well meaning products, but my hissy experience with Behringer 4-5 years ago turned my recordings pretty loud on the top end. See if using a different preamp helps with that.
Of course, it's a better idea to get an audio interface as a direct solution. Though it's good practice to lower the potential noise as much as possible in all areas on the studio, especially the parts near source.