Does anyone kno bout AutoCad?
914181
You can download free trial software from Autodesk, the publishers of AutoCAD.\nhttp://www.autodesk.com
477319
i don't get you problem. what are you using? autodesk? you can download Alibre Design free at www.alibre.com/xpress/
944019
I've been learning to use autodesk and autocad for the last 6 months now and I have used many resources for learning including my textbook, but for online information and resources the manufacturers site has a ton of information, tutorials, and provides assistance. Here is the link that I use (put it in favorites):\nhttp://usa.autodesk.com/adsk/servlet/aut...\nGood luck --> it is such a great program to use I don't know how I got along without it before.
1122583
Try autodesk.com they will give you the sites.
44029
3D Studio Max all the way for any high end graphics.  Autocad's primary function is for architecture, but for any 3D designs that will be used for graphical use 3D Studio Max is the way to go.
155649
Using a search engine like Yahoo would be a great place to start. But here's a couple of sites to get you started:\n\n1: http://en.wikipedia.org/wiki/Computer-aided_design\n\n2: http://www-staff.lboro.ac.uk/~cdspk/d&t_cad_pages/mod_level1/intro.htm
942149
This is freeware. Enjoy.\n\nhttp://www.sketchup.com/
229496
I have a bought version of Alibre (very very good). It's not as powerful as autocad for 2d, not as powerful as soldiwords for 3D but having a free version and being very inexpensive, it's very good.\n\nAlibre Express has a 3D aspect, which can be translated to the standard 2D format for layout on a template, or plain old 2D. Many export formats and easy to print a completely dimensioned drawing. Section views, detail views, mass property calculations (3d), and much more. Anyways it's the best 3D/2D for free I've seen.
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You can download the free software from here:\n\nThere are a few freewares and sharewares:\n\nhttp://www.download.com/3D-Modeling-CAD/3150-6677_4-0.html
846130
Even though you are using the same program. An old program of AutoCAD simply can't open anything created/saved by a newer version. Only newer version can read old AutoCAD files.\n\nIf you still persist in opening it using your AutoCAD version 7 (I assume it is licensed), Have your files saved to version 7 first (if the new version have option to save files on lower version format)
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I suggest you buy your own (latest) version of\nAutoCAD and take it from there.   You do not say what you want do as a freelance but if you want to set up in business there are many other aspects to be considered.   If we knew what you wish to do we might be more helpful.
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Autocad is probably the most popular.  It has many versions including LT and 2006.  It's probably the most user friendly also.  One that is more advanced is called Rhino.  It uses four windows showing every dimension in different views.  There are others, but these are the most popular and user friendly
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This is a good free cad program:\n\n\nhttp://www.cadstd.com/
688939
We ended up designing our own house but before we did you looked at a lot of houseplan books. They are available at most newstands. We settled on a plan we liked the most and then modified it to suit our needs. Enlarging some spaces and moving others. \n\nI did the actual drawing of the plans using a software package called TurboCad by IMSI. It was very useful. You can still get some of the older versions online at a reasonable price.
223929
ECAD is I presume: Electronic Computer Aided Design. \nBest, use AUTOCAD. Its drawing designs in a comp. Its mostly used by architects. For Eg. Drawing a blue print for\nyour house etc.
647125
AutoCAD is commercial software and not free. There are a good number of free/shareware CAD programs available, however.
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try sketchup from google..\n\nhttp://sketchup.google.com/\nhttp://sketchup.google.com/3dwarehouse/\n\n...