Several webhosts have set very stringent time limits and size limits on what you can and cannot upload. For example 2Mb seems to be the standard maximum size for a file upload on the majority of web hosts (Joomla KB and Mailing List are both bigger than 2Mb!), Some other hosts limit the PHP excecution time to 30seconds – so if it takes longer to upload than 30seconds an error is produced.
To install a Joomla Extension using the “Install from directory” method follow these simple steps (Joomla 1.5.x):
- Download your components Zip file to your PC.
- Extract the Zip files contents
- Create a folder in your webspace (under the public_hmtl/tmp/ is a good place, for this example call it “kb”)
- Use FTP to upload your extracted Zip files to the /public_html/tmp/kb/ folder
- Login to Joomla Admin,
- Select Extensions
- Select Install/Uninstall
- In the “Install Directory:” path enter the full path to your files you uploaded (public_html/tmp/kb/ in our example above)
- Click “Upload File & Install” Button
- Thats It !
This will help you overcome any file upload or time limit restrictions set by your web hosts ! 
works like a charm – thanks Phil!
Thank you Phil
Nice work..
Regards
Hardy
That’s a good choice only if file in the folder is not o much, I think. But, I agree with this way.