I can see how you feel....
there is this wish... for a start... this "I want it here and now" better yesterday than next week... sort of thing....
I know it will not make you feel better saying this....
But to help you out some how.... here are some links where to find some LC4 620 and 640 Adventures in Europe, if you are prepared to travel a bit to fetch your bike.... I can offer some translation if that helps...
have a look at eBay under:
KTM LC4 Adventure R 640 mit Mikuni Vergaser Enduro
ebay auction no: 230241434614
located in Isenbüttel, Deutschland price
1.255-Euros ending 20.04.08 21:08:02 MESZ
KTM LC4 Adventure
ebay auction no: 140224428464
located in Gartenau-St. Leonhard, Österreich
855-Euros ending 20.04.08 22:31:08 MESZ
if you think ebay is not your game have a look
2nd hand bikes at Startseite*@ KTM Beckfeld - Ihre KTM Vertretung in Münster
or K T M - S O M M E R
I had my Engine rebuild by KTM-Musch as I was still working in the UK they did a good job on my old KTM EGS 2-stroke 350cc Enduro from 1989, and KTM-Sommer is the biggest dealer around and have a lot in stock do international mail order too... at least they know where to get 2nd hand Adventuers... they still have new LC4 640 Adv, lined up in there shop.
in the end it's always the same... if you are not looking there will be plenty bikes around, but as soon you start searching... they will be all vanished over night...
I tell you... seriously... you are better off getting the right bike right away, before you start botching about tarting up an SM even if you have to wait a bit, but it will safe you a lot of hassle and money in the end.