.htaccess rewrite rule is wrong

I'm trying to write .htaccess rewrite rules for my site.

1. menu links must be shown in address bar like that; www.abc.com/First, www.abc.com/Second those links must be rooted to page.php?m=First

2. news details shown in seperate pages www.abc.com/news/15, www.abc.com/news/98 those links must be rooted to news.php?id=15

3. other files like index.php mustn't be rewritten.

how can I solve it?