Vista - voip problem

hello everybody,
2 days back i installed vista(700mb) on my laptop. I use some voice services(actionvoip,smartvoip,nonoh)to make long distance calls. My problem is that when i try to type the phone nos. in the required field to make a call, then the nos. are not typed there.No action is taken by the keyboard in the required field. I have to copy-paste the nos. then only i can use it. This problem was not there with my previous vista ultimate version. But, the same doesn't happen if i type something in the browser just in case of these voip softwares only. May be i think there is some file missing(e.g. dll etc.). I tried by downloading the latest flash player as well as Flash6.ocx file, but it didn't work. I am really worried about this. Please anyone help me in this regard. One more thing that is it ok to use this version (700mb) cut by vlite? yesterday i got a little system crash due to which there was booting problem. But i repaired it. Now its ok.