I found this one helpful in locating the group password/IPSecret from the windows client...
To the earlier poster, I guess there is some issue with the routing tables in your PC.
Note that you home/personal subnet should not be used in the company....
eg, most companies large/small will use private IP's in the 10.0.0.0 network, if so you should setup your local subnet in 172.16.X.X subnet or 192.168.X.X so routing is simple...
if you have time and a fast pc/linux on the office network you can try running
nmap -sP -oG ~/myPingScan.txt 10.1-254.1-254.1-254 172.16.1-254.1-254 192.168.1-254.1-254
overnight and use the output to figure out what IP address' are in use in your office..
and then decide the subnet you should setup in your home