Umm... err... not sure about CCleaner - does it clear all cookies automatically or only on demand? If you go to Options > Cookies, there is a list of those to Delete, and also one for Cookies to keep. I would suggest putting the 'pc-pals.com' cookie in the Keep list, as well as those from any other forums you regularly visit.
You'll have to tell me what browser you're using before I can help you with storing cookies - is it Internet Explorer, Firefox or another?