This is the wrong forum for asking computer problems. This is reserved for forum related subjects.

In any case I don't think this is possible. Two reasons;

1] Many web sites specify the size of the new window that opens in the HTML code.

2] Even if they don't, the 'default' size is the size of the current window. There are no settings for managing window sizes, unless there are in the Registry. I wouldn't go there.

Mark