mcwfarms: In Lightroom settings you can set photoshop to open sRGB files when you use the Lightroom -> Edit in Photoshop button.
cow: When you shoot RAW the colour settings in the camera are meaningless. There's something you're doing in the process of importing and saving, or there's a setting that is mangled.
Let's start with the assumption that your workflow is wrong. Unfortunately you cropped out just a tiny bit too much of the image above to make it useful. In the titlebar of the image in Photoshop does it show "Filename (RGB/8*)" or "Filename (RGB/8)". The * if outside the brackets indicates if the picture is saved or not, but if its inside the bracket it will indicate if you are not using sRGB. If this is the case then you need to use the convert to profiles feature (maybe you did something wrong last time). The likely source of the problem is in the Adobe CameraRAW dialogue on the bottom of the screen it will give you the choice of what colour space to open. Set this to sRGB.
If the picture really is sRGB (no *, or if you want to be really pedantic if you click edit -> assign profile it'll tell you the current profile of the image), but if it really IS sRGB then you have a windows colour management issue. Photoshop will import the display profile from windows if it is set, windows picture and fax viewer will not. You can check the colour profile by clicking edit -> colour settings, look for Working Spaces -> RGB, and click the down arrow. One of the options should be "Monitor RGB - <colour profile name>". Don't pick this, just look and cancel out of the dialogue. If you don't have a standard gamut monitor and no colour calibrator then this should be sRGB, and we must search further for the problem. If you do have a wide gamut monitor or you use a colour calibration device then this will have whatever profile it loaded from windows.
But I find this later case to be unlikely since Photoshop shows a more saturated image than Picture Viewer.