1)- Blog/Homepage URL- http://www.blogger.com/blogger.g?blogID=1853225125323725410 (some thing like this, copy the URL after login on blogger and open design/loyout page for your specific blog)
2) USERNAME and PASSWORD -- abc@gmail.com and XXXXXXXX (as your login ID)
ADVANCE-
1)- Select from dropdown box -- BLOGSPOT.COM
2)- Blog ID- enter from above URL, like (1853225125323725410)
3)- Text direction -- as u wish
now OK option is appeared
then click OK
I have not tried with other Blogging site but it may work with all blogger...
if have any problem to configure ...plz write

2) USERNAME and PASSWORD -- abc@gmail.com and XXXXXXXX (as your login ID)
ADVANCE-
1)- Select from dropdown box -- BLOGSPOT.COM
2)- Blog ID- enter from above URL, like (1853225125323725410)
3)- Text direction -- as u wish
now OK option is appeared
then click OK
I have not tried with other Blogging site but it may work with all blogger...
if have any problem to configure ...plz write