I need some software to make oneline diagrams,and schematics.All I have been able to find are exspensive and contain alot of stuff I don't need

Here's a Potporri of suggested Applications:

• Visio (medium to high priced, but very powerful and easy to use),
• TurboCAD / TurboSketch (low to medium priced, very user freindly and powerful for the low price),
• Graphics Applications (such as Paintshop, Photoshop, etc.) which allows the use of multiple layers and importing (OLE or copy/paste) of "Clipart" or other elements.

The higher end items would be a Professional CAD Application - such as AutoCAD [LT or full version], or Schematic Applications which use PSPICE - such as Circuit Maker, etc.
These applications begin at around $300.00

After you work with any CAD / Graphics app around 6 months, you will begin to really want the "Extra" stuff that accompanies Pro apps. These include multiple file formats, abilities to work with external applications, and also the creation of Macros [Scripts] to make the redundant work somewhat "Automatically done".

Good luck.

Scott SET

I am not entirely sure what your use of the software is, but there is an electonics/electrical program by the name of PSPICE that has a free demo with all working features available for download or you can request a CD. Its more geared toward the electronics industry, but I have been told there are electrical downloads for it. Below is the link to the site.
http://www.orcad.com/Product/Simulation/PSpice/eval.asp