2nd profession changer, what happens to my skills?

i right now got a lvl 20 W/Me with almost all skills, and a lvl 12 R/Mo.
I would like to change my w/me to w/r and delete my r/mo to create a mo/me.
here's my question:
how do i get all the ranger quest skills on my lvl 20?
do i need to do all the quests again?
and should i change it or just keep it this way to keep my skills?

~~pul~~

You can't redo the quests, you would have to buy them/get them from quests you have not yet completed.

To get the Ranger skills you will most likely have to buy them from skill trainers. No skill quest is repeatable, although there are a few ranger-only quests that will become availible as soon as you change your secondary (they are only good for a dozen skills or so). You will of course keep the ranger skills you previously learned unlocked for PvP chars, but that won't help you with your PvE chars.

If you feel like changing, change, you can always change back (yes, you will still have all mesmer skills you learned on your warrior if you change back to mesmer later).

thanx for the replies

cool, i didn't know that...

but i have a few problems:
1: i have done ALL skill quests, so i have to buy all the skills i want...
2: i don't got the MONEY for that...
3: i don't got the SKILL POINTS for that...

(it probebly takes ages to get about 60 skill points)

In Tyria, there are 2 types of Skills quests. The first ones are given to everyone, and the skill rewards vary wtih the profession of the character. These quests can't be re-done. The second type of quests are profession specific, not available to every profession. There are 4 or 5 of these and they become available to characters when they change secondaries. Guildwiki has a nice breakdown of skills quests.

how menny skills do i have to 'buy'? (exept elite)

i changed it.
and i got all the quest skills i could (checked on guildwiki).
but i still need 59 skills (including elites). so i need 59 skill points...
i've done all missions and got 16 skill points, so i still need another 43 skill points.
enyone got eny idea how long that will take?