simple. go to controll panel, network connection. press left alt and you will see new menu will pop out. now chose menu advanced -> advanced settings.
moce comodo connection on top , save and reboot.
it should work now.
for windows 7 ( bfore was for xp ) go to control panel -> network & sharing center. on eft chose 'change adapter settings'& now do the trick with left alt. same as beffore, save aand reboot.
and comodo should be only one vppn instaled on pc. chech firewall as well for any issue.