If you are not experienced with RJ-45 crimping do not crimp.
It is much easier, and better results to Install in the wall Keystone Jacks, and connect the computers with commercial made RJ-45 to the wall.
The following link will provide an actual description.
Link:
Physical Home Networking
Link:
How To Terminate & Assemble Keystone Jacks.
You can buy in Home depot, or on line here.
Link:
http://www.9thtee.com/networking.htm
Link:
Ethernet CAT5 Patch Cables.
If you insist on crimping, full instructions here.
Link:
How to make CAT5
To avoid future headaches, do Not Wire Crossover in the wall.
For occasional use of Crossover cable you can use a Reversed Coupler.
Link:
Reversed Coupler
Two Straight Cable with this Coupler make a Crossover cable.
In very general terms, evaluating CAT5e cables for
Home LANcan be done by:
1. Measuring DC continuity.
2. Using RF signal.
3. Commercially Certifying the Cable.
The 1st method is basically useless, since DC continuity can be OK yet the Cable will be very poor RF conduit. (The cable has to deal with a 100Mb/sec. signal).:Q
To employ the
2nd method. For about $50-$100 you can find a Tester that is constructed of two units.
One unit is placed at one end and inject RF signal to the Cable, the second unit receives the signal (or not).
Cables tested by this method are fairly safe to use.
Example:
KTCT-902 Lan Cable Tester.
The 3rd option involved very expensive hardware made by Fluke Co. However it is the way the pro go.
This is the Entry Level Tester ($600).
Link:
Fluke 620 LAN