For those of you who are sick of my questions now and know my struggle with converting my theme from RTL....
Most of my solutions have been based on bracketing my text with <div style="direction: rtl; text-align: right;"> HTML. This has worked like a charm both in posts and also in various fields, e.g. Menus etc (finally got that one sorted - always check for missing code!)
Anyway this HTML work around falls flat within the Categories widget.
Because Hebrew being the language of the devil (or so you see in the movies, my wife would say otherwise ;) when we display post counts, the brackets surrounding the value are askew.
Is this something I can change in either custom.css or PHP (if so how on both). Alternatively, I would settle for just removing the brackets surrounding the post count value in the category field