Can ping but cannot telnet,http,etc.

My situation is:
I install the guest OS WindowsXp on host OS Debian via VirtualBox.
I try to use bridge-connecting to create the network.Thus,the guest
and host are in the network:10.0.1.1/24,and the host and other
computers are in the network:192.168.1.1/24.My host have two ip:
10.0.1.1 and 192.168.1.100.The ip of my guest is 10.0.1.2.
My problem is:
My guest can ping any ip which is activity,for example,it can ping
www.google.com and 192.168.1.102.But it cann't access any ip via a tcp
connection.For example,after I telnet ptt.cc,the terminal turn black
and wait something and it shows that it has found the host.As the
same,I cannot access www.google.com via browser,my explorer also shows
that it has found the host but waiting.
What should I do?

Thanks for any reply.
hoo