caption numbering and point after caption

[Detlev Humann]

Hi! I�m writing in book-class (koma-script) and I use \appendix to mark my apendix-section.   1. Problem: What I don�t like is the default numbering of tables and figures in captions, LoT and LoF (eg. "Table 2.3."). So I changed it with \renewcommand{\thetable}{\arabic{table}} an I got now e.g. "Table 9." (without the chapter-counter in front). The problem is that the counter of tables and figures in the appendix is reset, so that there are two identically named "Table(s) 9" (in the text-part and in the appendix). Therefore I tried out Herbert�s hint (www.educat.hu-berlin.de/~voss/lyx/counter/counter.html) and put \@removefromreset{table}{chapter} in the Latex preamble but I got the error message "undefined control sequence". Putting this command in the text I got the error message "missing $ inserted". What's going wrong?   2. Problem: I'd like to get rid of  the point after the caption. E.g. I�d like to have "Table 9" instead of "Table 9.". How can I achieve this?   Thanks in advance   Detlev