Introduction: 
Step 1:I want to draw a network of road in arcview. (for eg- node 1 is
connected to nodes 2, 3 and 4. node 2 connected to node 5, node 5
connected to 4). This is just the input and to show the initial
network.

Step 2: I run an algorithm in VB and I find a set of routes that begin
at 1 and end at 1. for example I get the output from visual basic as 3
routes, which are:
1-2-4-5-6-7-5-4-8-1, 1-3-11-8-9-3-1, 1-12-9-4-2-1. Assume that these 3
routes are in an output text file

Step 3: I want to show the above three routes in my original network,
with arrows to show the direction of the route, and 3 different colors
so as to differentiate between the 3 routes.

I would greatly appreciate if someone can inform me whether its
difficult to do so in arcview or arcgis. I dont have the initial
network already drawn so I will also have to draw it first and be able
to change it also so that I can run a completely different problem.

I am willing to give upto 100$ in tip (or more if its not easy) if
anyone can provide me the code for the above task.  If its not
possible, just a detailed answer to my question for the currently set
price would be greatly appreciated.

Thanks.