[wplug] httpd rewrite help

[Chris Romano]

I'm trying to write a RewriteRule but I'm not very get with regex.

I'm trying to turn this link:
www.example.com/a/k=VALUE1&u=VALUE2

into this:
www.example.com/a/index.php?k=VALUE1&u=VALUE2

I've tried the following two rules and they don't work.  I'm just
having a hard time find clear howtos on this.
RewriteRule ^a/([^/]+)?$ a/index.php?$1 [L]
RewriteRule   ^a/([A-Za-z0-9-]+)/([0-9]+)?$ a/index.php?k=$1&u=$2 [L]

I have a few other rules that I've been able to get to work, but this
one is giving me problems.

Thanks,
Chris

-- 
"They that would trade essential liberty for a little temporary safety
deserve neither." -- Benjamin Franklin