Hmm... is "we cannot procede" the exact error message? Is it a BBS error message? Does it say anything about being a proxy error message? Most people that have problems similar to what you describe are behind some sort of proxy server. (ISP's have been known to put in transparent proxys that try and hide, so you never know).

Try installing mozilla or another broswer of choice for your operating system and see if that clears up the problem

Matthew