Does anybody has any pictures of the MIG-29 in service with SUDAN or YEMEN?

There’s plenty of them on the internet, even in this thread.
You just need to search.

Sudan:
http://www.airliners.net/search/photo.search?aircraft_genericsearch=&airlinesearch=&countrysearch=&specialsearch=&daterange=&keywords=Sudan+MiG-29&range=2&sort_order=&page_limit=15&thumbnails=&calccount=1283455&truecount=false&engine_version=6.0

Yemen
http://avcom.co.za/phpBB3/viewtopic.php?f=15&t=23580&st=0&sk=t&sd=a&start=15

Found another SA-2 look-alike in New Mexico :confused:

My point is a polite (if not subtle) reminder that the US buys a fair amount of European hardware.

One of the reasons why US buys items from Europe is that the US compnies are sometimes unable or unwilling to develop a certain product.
Some of the european designed aircraft in US service simply did not had a US counterpart in the same class at the time they were aquired.
A few examples:

Harrier
T-45 (navalized Hawk)
T-6A Texan II (aka PC-9)
C-27
UH-72 Lakota (EC-145)

Morocco MiG-17
http://www.aircraftslides.com/Auction/AuctionDetail.aspx?ID=450718
UAE AF MB326LD 208
http://www.airlinehobby.com/listings/details/index.cfm?itemnum=582485703
NAF 954 NIGERIAN AF G222
http://www.airlinehobby.com/listings/details/index.cfm?itemnum=582485123
Jamaica Defence Force Islander JDFT-2
http://www.airlinehobby.com/listings/details/index.cfm?itemnum=582481001
CHAD AF C54 AB 10409
http://www.airlinehobby.com/listings/details/index.cfm?itemnum=582320620

I think they were used with actual real systems – Tolicha Peaks not a bombing range is it? /unsure/

Indeed, but there is a large bombing range to the north-west, with two fake (target) airfields, that’s where the two sites are located. If you take a close look at them, you can see lots of impact points.

remains of an SA-2 site at Bagram ?

The 5 MIG-29 fighters have been in the arsenal of Yugoslavian AF whose aircraft park numbered 30 airplanes of the type. But in the course of military operations carried out by NATO the most of the Yugoslavian aircraft were destroyed.

http://www.avia.ru/cgi/news/news.cgi?action=geten&id=1212827950

They only had 16 Fulcrums, not 30.