well, sience it's a 98, it's got a CAD, which means that the axle shaft on the passanger side it two pieces. you should only have to replace the one dammaged piece of the shaft.
ok, this link has a picture of a jeep D30 passanger sie axle shaft assembly, but it's basically the same as the D44 in the dodges, just smaller.
http://cgi.ebay.com/ebaymotors/jeep-...spagenameZWDVW
the part of the shaft that goes into the dif should be fine, as it's not required to be out to change U-joints. you can most likely just get a replacement for the one piece of the shaft that was dropped, and reuse the existing stub shaft, and intermediate shaft.