Antivirus & firewall to run on Windows98 with 32Mb RAM

I am presently running McAfee VirusScanProf. 7.0 & Firewall.
The virus scan has been tempramental for a long time - frequently requiring me to go in & "launch virus scan" then click to start active file checking. Mcfee support upgraded me to some later version, but the problem has persisted.
Recently I sometimes get error messages - a whole series of boxes opening up to warn me that the something cannot connect to application files( please forgive my vagueness - I'll make a note next time it happens)

I do not want to spend any more cash on this PC as I hope to upgrad in a couple of months.
I do weekly updates of signature data files & I also run Ccleaner & AdAware.

Does anyone know of a reliable virus checker & firewall to run on such a low spec. PC ?

free AVG7 antivirus at www.grisoft.com
free Sygate personal firewall at http://www.sygate.com/firewall/
I think Zonealarm, Kerio and Outpost firewalls will be too memory-hungry.

Thanks - I will try these just a soon as I can get some backup facility. I am sure a re-format would resolve the very frequent freezing & crashing.

The McAfee error message appearing in a cascade of boxes was "unable to establish a communications link between the application & the device driver". As McAfee are no longer supporting Virus Scan Prof 7.0 this is a bit irrelevant I suppose.

AVG7 - not free now?

I have just visited the www.grisoft site & they seem to be charging £22 for a licence now. I think I may have missed the free offer - or can I still evaluate it for free? I emailed the sales department to check on compatability as the site says " windows 2000 & NT supported" but they replied that it would work on the 64Mb PC with Win98.

I think sales departments & the term "free" are not compatable however

http://free.grisoft.com/doc/1

By the way, that mobo supports up to 768MB memory
You need this type: 168pin PC100 SDRAM DIMM CL=2
from e.g. http://www.crucial.com/uk/store/MPa...6D2A93A5CA7304&WSMD=MS-6119&WSPN=CT16M64S4D8E